code: def excluded_combos(
      list_1: list[str], list_2: list[str]
  ) -> list[tuple[str, str]]:
      """
      Return exclusion lists of elements that should be excluded from the matrix of the two list of items
      if what's left should be representative list of combos (i.e. each item from both lists,
      has to be present at least once in the combos).
      :param list_1: first list
      :param list_2: second list
      :return: list of exclusions = list 1 x list 2 - representative_combos
      """
      all_combos: list[tuple[str, str]] = list(
          itertools.product(list_1, list_2)
      )
      return [
          item
          for item in all_combos
          if item not in set(representative_combos(list_1, list_2))
      ]
  
imports: from __future__ import annotations
  import itertools
label_desc: Use image node_id 2 for calling a global function with example usage: excluded_combos(list_1, list_2) and returns: unknown