diff --git a/prototyping/sorting_algo.py b/prototyping/sorting_algo.py
index d9f28d8..00a454e 100644
--- a/prototyping/sorting_algo.py
+++ b/prototyping/sorting_algo.py
@@ -8,13 +8,14 @@ class Rule(NamedTuple):
     parent: str
 
 
-def sort_by_rules(in_list: list, rules: list[Rule]) -> bool:
-    def is_rule_satisfied(in_list: list, rule: Rule) -> bool:
-        child_val, parent_val = rule
-        child_index = in_list.index(child_val)
-        parent_index = in_list.index(parent_val)
-        return parent_index < child_index
+def is_rule_satisfied(in_list: list, rule: Rule) -> bool:
+    child_val, parent_val = rule
+    child_index = in_list.index(child_val)
+    parent_index = in_list.index(parent_val)
+    return parent_index < child_index
 
+
+def sort_by_rules(in_list: list, rules: list[Rule]) -> bool:
     def move_item_down(in_list: list, index: int):
         """moves item"""
         # assert index >