diff --git a/config.json b/config.json
index 9e3dba8..7ca573e 100644
--- a/config.json
+++ b/config.json
@@ -58,20 +58,20 @@
     ],
     "practice": [
       {
-        "slug": "acronym",
-        "name": "Acronym",
-        "uuid": "da98b0d1-7b2d-4a0a-8493-c431b4409b40",
+        "slug": "hello-world",
+        "name": "Hello World",
+        "uuid": "151ebc38-659c-4752-b51c-cc7d1d7b1ef4",
         "practices": [],
         "prerequisites": [],
         "difficulty": 1
       },
       {
-        "slug": "allergies",
-        "name": "Allergies",
-        "uuid": "46b0292a-0e22-4e4d-9934-7c166d86a919",
+        "slug": "leap",
+        "name": "Leap",
+        "uuid": "d2bbc189-f4c8-46b9-8616-a28e3d946bde",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 1
       },
       {
         "slug": "armstrong-numbers",
@@ -82,132 +82,132 @@
         "difficulty": 1
       },
       {
-        "slug": "bowling",
-        "name": "Bowling",
-        "uuid": "37c049f1-f83a-4b5d-a813-7347fa2b54a3",
+        "slug": "collatz-conjecture",
+        "name": "Collatz Conjecture",
+        "uuid": "5be182a1-5f3a-4b93-aac4-1619508b6052",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 8
+        "difficulty": 1
       },
       {
-        "slug": "clock",
-        "name": "Clock",
-        "uuid": "db98cc14-f1db-40f6-a5d0-d5c151c98570",
+        "slug": "reverse-string",
+        "name": "Reverse String",
+        "uuid": "b1327f91-8568-4d80-b5ff-b043250cc819",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 1
       },
       {
-        "slug": "crypto-square",
-        "name": "Crypto Square",
-        "uuid": "0099a6d9-881a-458e-930e-506242e62d1c",
+        "slug": "sum-of-multiples",
+        "name": "Sum Of Multiples",
+        "uuid": "0fbe5e82-b563-4360-8957-e3a543eb3184",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7
+        "difficulty": 1
       },
       {
-        "slug": "change",
-        "name": "Change",
-        "uuid": "0325c948-8f14-4bc5-8f75-8759c024e24b",
+        "slug": "nucleotide-count",
+        "name": "Nucleotide Count",
+        "uuid": "da6e2fd6-1d81-4ccc-8030-16065fef548b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6
+        "difficulty": 1
       },
       {
-        "slug": "collatz-conjecture",
-        "name": "Collatz Conjecture",
-        "uuid": "5be182a1-5f3a-4b93-aac4-1619508b6052",
+        "slug": "acronym",
+        "name": "Acronym",
+        "uuid": "da98b0d1-7b2d-4a0a-8493-c431b4409b40",
         "practices": [],
         "prerequisites": [],
         "difficulty": 1
       },
       {
-        "slug": "darts",
-        "name": "Darts",
-        "uuid": "3a82983f-9b8c-4b61-973c-5a40dd2fc708",
+        "slug": "isogram",
+        "name": "Isogram",
+        "uuid": "c7f87c99-5e61-4887-909e-eefcbd6a4183",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2
+        "difficulty": 1
       },
       {
-        "slug": "diamond",
-        "name": "Diamond",
-        "uuid": "4549e619-87dd-4ba3-b89c-6f3359a25d7c",
+        "slug": "difference-of-squares",
+        "name": "Difference of Squares",
+        "uuid": "a9022ecf-0811-4807-8d8e-29da4c684d6b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7
+        "difficulty": 1
       },
       {
-        "slug": "all-your-base",
-        "name": "All Your Base",
-        "uuid": "4122377f-1ddc-4733-98c1-bd52e67de95d",
+        "slug": "rna-transcription",
+        "name": "RNA Transcription",
+        "uuid": "0b4e2dbd-7a5e-4a3d-b13d-9138518d9a63",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 1
       },
       {
-        "slug": "hello-world",
-        "name": "Hello World",
-        "uuid": "151ebc38-659c-4752-b51c-cc7d1d7b1ef4",
+        "slug": "space-age",
+        "name": "Space Age",
+        "uuid": "06c1d4b6-1262-474b-80b4-6e779fa11743",
         "practices": [],
         "prerequisites": [],
         "difficulty": 1
       },
       {
-        "slug": "leap",
-        "name": "Leap",
-        "uuid": "d2bbc189-f4c8-46b9-8616-a28e3d946bde",
+        "slug": "bob",
+        "name": "Bob",
+        "uuid": "66a4dd87-5397-4125-a002-271b750ac32a",
         "practices": [],
         "prerequisites": [],
         "difficulty": 1
       },
       {
-        "slug": "matching-brackets",
-        "name": "Matching Brackets",
-        "uuid": "eccd26dc-6826-4d9e-868a-e1d640e57d3b",
+        "slug": "etl",
+        "name": "ETL",
+        "uuid": "2d8bec01-cecb-4f8b-91c9-f887e6aa9689",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 8
+        "difficulty": 1
       },
       {
-        "slug": "majority-element",
-        "name": "Majority Element",
-        "uuid": "5975f00d-8a77-4240-91c1-1fedb41c2adb",
+        "slug": "run-length-encoding",
+        "name": "Run Length Encoding",
+        "uuid": "f544ddc2-efb7-4dff-994f-9c2578c68414",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 1
       },
       {
-        "slug": "nucleotide-count",
-        "name": "Nucleotide Count",
-        "uuid": "da6e2fd6-1d81-4ccc-8030-16065fef548b",
+        "slug": "darts",
+        "name": "Darts",
+        "uuid": "3a82983f-9b8c-4b61-973c-5a40dd2fc708",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 2
       },
       {
-        "slug": "rna-transcription",
-        "name": "RNA Transcription",
-        "uuid": "0b4e2dbd-7a5e-4a3d-b13d-9138518d9a63",
+        "slug": "raindrops",
+        "name": "Raindrops",
+        "uuid": "996061d4-9b39-4a69-8002-d45dbb84d32f",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 2
       },
       {
-        "slug": "rotational-cipher",
-        "name": "Rotational Cipher",
-        "uuid": "48003454-b404-4b39-a0d9-78106fd5a11a",
+        "slug": "protein-translation",
+        "name": "Protein Translation",
+        "uuid": "0ed31b68-a411-4819-a501-d46b5b31e069",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5
+        "difficulty": 2
       },
       {
-        "slug": "scale-generator",
-        "name": "Scale Generator",
-        "uuid": "d83fd7ee-2eff-41d5-8a7c-e3893a969150",
+        "slug": "roman-numerals",
+        "name": "Roman Numerals",
+        "uuid": "d542ca66-4c3a-45ad-b7fd-ce8d8656aee8",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 2
       },
       {
         "slug": "sieve",
@@ -218,164 +218,164 @@
         "difficulty": 2
       },
       {
-        "slug": "simple-linked-list",
-        "name": "Simple Linked List",
-        "uuid": "3a377fd7-2f66-4326-94f5-e3e05133c252",
+        "slug": "largest-series-product",
+        "name": "Largest Series Product",
+        "uuid": "04dcaeca-77f8-4f4d-9641-792559d58aee",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4
+        "difficulty": 2
       },
       {
-        "slug": "space-age",
-        "name": "Space Age",
-        "uuid": "06c1d4b6-1262-474b-80b4-6e779fa11743",
+        "slug": "sublist",
+        "name": "Sublist",
+        "uuid": "0240f3b9-52e7-4408-93c0-7766dbb4c60a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 3
       },
       {
-        "slug": "spiral-matrix",
-        "name": "Spiral Matrix",
-        "uuid": "e12d9757-b6fe-45ff-ab31-b18df42c3f0a",
+        "slug": "allergies",
+        "name": "Allergies",
+        "uuid": "46b0292a-0e22-4e4d-9934-7c166d86a919",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5
+        "difficulty": 4
       },
       {
-        "slug": "stream-ops",
-        "name": "Stream Ops",
-        "uuid": "56c6f521-3567-4f35-8f73-c675d14aaa4b",
+        "slug": "clock",
+        "name": "Clock",
+        "uuid": "db98cc14-f1db-40f6-a5d0-d5c151c98570",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5
+        "difficulty": 4
       },
       {
-        "slug": "sublist",
-        "name": "Sublist",
-        "uuid": "0240f3b9-52e7-4408-93c0-7766dbb4c60a",
+        "slug": "simple-linked-list",
+        "name": "Simple Linked List",
+        "uuid": "3a377fd7-2f66-4326-94f5-e3e05133c252",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3
+        "difficulty": 4
       },
       {
-        "slug": "sum-of-multiples",
-        "name": "Sum Of Multiples",
-        "uuid": "0fbe5e82-b563-4360-8957-e3a543eb3184",
+        "slug": "all-your-base",
+        "name": "All Your Base",
+        "uuid": "4122377f-1ddc-4733-98c1-bd52e67de95d",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 4
       },
       {
-        "slug": "raindrops",
-        "name": "Raindrops",
-        "uuid": "996061d4-9b39-4a69-8002-d45dbb84d32f",
+        "slug": "majority-element",
+        "name": "Majority Element",
+        "uuid": "5975f00d-8a77-4240-91c1-1fedb41c2adb",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2
+        "difficulty": 4
       },
       {
-        "slug": "run-length-encoding",
-        "name": "Run Length Encoding",
-        "uuid": "f544ddc2-efb7-4dff-994f-9c2578c68414",
+        "slug": "scale-generator",
+        "name": "Scale Generator",
+        "uuid": "d83fd7ee-2eff-41d5-8a7c-e3893a969150",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 4
       },
       {
-        "slug": "queen-attack",
-        "name": "Queen Attack",
-        "uuid": "81cd43cd-022c-4f68-84f3-1c687f686c29",
+        "slug": "rotational-cipher",
+        "name": "Rotational Cipher",
+        "uuid": "48003454-b404-4b39-a0d9-78106fd5a11a",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5
       },
       {
-        "slug": "zebra-puzzle",
-        "name": "Zebra Puzzle",
-        "uuid": "642e8ce3-9cb2-4acb-a330-8385dfa40d92",
+        "slug": "spiral-matrix",
+        "name": "Spiral Matrix",
+        "uuid": "e12d9757-b6fe-45ff-ab31-b18df42c3f0a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 10
+        "difficulty": 5
       },
       {
-        "slug": "zipper",
-        "name": "Zipper",
-        "uuid": "49dcbf18-2024-499c-a951-ed009f97ef8f",
+        "slug": "stream-ops",
+        "name": "Stream Ops",
+        "uuid": "56c6f521-3567-4f35-8f73-c675d14aaa4b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 9
+        "difficulty": 5
       },
       {
-        "slug": "reverse-string",
-        "name": "Reverse String",
-        "uuid": "b1327f91-8568-4d80-b5ff-b043250cc819",
+        "slug": "queen-attack",
+        "name": "Queen Attack",
+        "uuid": "81cd43cd-022c-4f68-84f3-1c687f686c29",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 5
       },
       {
-        "slug": "protein-translation",
-        "name": "Protein Translation",
-        "uuid": "0ed31b68-a411-4819-a501-d46b5b31e069",
+        "slug": "knapsack",
+        "name": "Knapsack",
+        "uuid": "48170328-ca9b-4598-b6a5-049cd6d318df",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2
+        "difficulty": 5
       },
       {
-        "slug": "difference-of-squares",
-        "name": "Difference of Squares",
-        "uuid": "a9022ecf-0811-4807-8d8e-29da4c684d6b",
+        "slug": "change",
+        "name": "Change",
+        "uuid": "0325c948-8f14-4bc5-8f75-8759c024e24b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 6
       },
       {
-        "slug": "knapsack",
-        "name": "Knapsack",
-        "uuid": "48170328-ca9b-4598-b6a5-049cd6d318df",
+        "slug": "crypto-square",
+        "name": "Crypto Square",
+        "uuid": "0099a6d9-881a-458e-930e-506242e62d1c",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5
+        "difficulty": 7
       },
       {
-        "slug": "roman-numerals",
-        "name": "Roman Numerals",
-        "uuid": "d542ca66-4c3a-45ad-b7fd-ce8d8656aee8",
+        "slug": "diamond",
+        "name": "Diamond",
+        "uuid": "4549e619-87dd-4ba3-b89c-6f3359a25d7c",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2
+        "difficulty": 7
       },
       {
-        "slug": "largest-series-product",
-        "name": "Largest Series Product",
-        "uuid": "04dcaeca-77f8-4f4d-9641-792559d58aee",
+        "slug": "bowling",
+        "name": "Bowling",
+        "uuid": "37c049f1-f83a-4b5d-a813-7347fa2b54a3",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2
+        "difficulty": 8
       },
       {
-        "slug": "etl",
-        "name": "ETL",
-        "uuid": "2d8bec01-cecb-4f8b-91c9-f887e6aa9689",
+        "slug": "matching-brackets",
+        "name": "Matching Brackets",
+        "uuid": "eccd26dc-6826-4d9e-868a-e1d640e57d3b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 8
       },
       {
-        "slug": "bob",
-        "name": "Bob",
-        "uuid": "66a4dd87-5397-4125-a002-271b750ac32a",
+        "slug": "zipper",
+        "name": "Zipper",
+        "uuid": "49dcbf18-2024-499c-a951-ed009f97ef8f",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 9
       },
       {
-        "slug": "isogram",
-        "name": "Isogram",
-        "uuid": "c7f87c99-5e61-4887-909e-eefcbd6a4183",
+        "slug": "zebra-puzzle",
+        "name": "Zebra Puzzle",
+        "uuid": "642e8ce3-9cb2-4acb-a330-8385dfa40d92",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 10
       }
     ]
   },