diff --git a/src/085-the-utils-folder/185-generic-functions-with-inference.problem.ts b/src/085-the-utils-folder/185-type-parameter-constraints-with-generic-functions.problem.ts
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rename from src/085-the-utils-folder/185-generic-functions-with-inference.problem.ts
rename to src/085-the-utils-folder/185-type-parameter-constraints-with-generic-functions.problem.ts
diff --git a/src/085-the-utils-folder/185-generic-functions-with-inference.solution.ts b/src/085-the-utils-folder/185-type-parameter-constraints-with-generic-functions.solution.ts
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rename from src/085-the-utils-folder/185-generic-functions-with-inference.solution.ts
rename to src/085-the-utils-folder/185-type-parameter-constraints-with-generic-functions.solution.ts
diff --git a/src/085-the-utils-folder/186-multiple-type-arguments.problem.ts b/src/085-the-utils-folder/186-generic-functions-with-inference.problem.ts
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rename from src/085-the-utils-folder/186-multiple-type-arguments.problem.ts
rename to src/085-the-utils-folder/186-generic-functions-with-inference.problem.ts
diff --git a/src/085-the-utils-folder/186-multiple-type-arguments.solution.ts b/src/085-the-utils-folder/186-generic-functions-with-inference.solution.ts
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rename from src/085-the-utils-folder/186-multiple-type-arguments.solution.ts
rename to src/085-the-utils-folder/186-generic-functions-with-inference.solution.ts
diff --git a/src/085-the-utils-folder/187-create-group-by-function.problem.ts b/src/085-the-utils-folder/187-multiple-type-arguments.problem.ts
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rename from src/085-the-utils-folder/187-create-group-by-function.problem.ts
rename to src/085-the-utils-folder/187-multiple-type-arguments.problem.ts
diff --git a/src/085-the-utils-folder/187-create-group-by-function.solution.ts b/src/085-the-utils-folder/187-multiple-type-arguments.solution.ts
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rename from src/085-the-utils-folder/187-create-group-by-function.solution.ts
rename to src/085-the-utils-folder/187-multiple-type-arguments.solution.ts
diff --git a/src/085-the-utils-folder/188-type-predicates.problem.ts b/src/085-the-utils-folder/188-create-group-by-function.problem.ts
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rename from src/085-the-utils-folder/188-type-predicates.problem.ts
rename to src/085-the-utils-folder/188-create-group-by-function.problem.ts
diff --git a/src/085-the-utils-folder/188-type-predicates.solution.ts b/src/085-the-utils-folder/188-create-group-by-function.solution.ts
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rename from src/085-the-utils-folder/188-type-predicates.solution.ts
rename to src/085-the-utils-folder/188-create-group-by-function.solution.ts
diff --git a/src/085-the-utils-folder/189-assertion-functions.problem.ts b/src/085-the-utils-folder/189-type-predicates.problem.ts
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rename from src/085-the-utils-folder/189-assertion-functions.problem.ts
rename to src/085-the-utils-folder/189-type-predicates.problem.ts
diff --git a/src/085-the-utils-folder/189-assertion-functions.solution.ts b/src/085-the-utils-folder/189-type-predicates.solution.ts
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rename from src/085-the-utils-folder/189-assertion-functions.solution.ts
rename to src/085-the-utils-folder/189-type-predicates.solution.ts
diff --git a/src/085-the-utils-folder/190-assertion-functions.problem.ts b/src/085-the-utils-folder/190-assertion-functions.problem.ts
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diff --git a/src/085-the-utils-folder/190-assertion-functions.solution.ts b/src/085-the-utils-folder/190-assertion-functions.solution.ts
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