docs: def find_group_consistencies(groups1, groups2):
      r"""
      Returns a measure of group consistency
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_alg import *  # NOQA
          >>> groups1 = [[1, 2, 3], [4], [5, 6]]
          >>> groups2 = [[1, 2], [4], [5, 6]]
          >>> common_groups = find_group_consistencies(groups1, groups2)
          >>> result = ('common_groups = %r' % (common_groups,))
          >>> print(result)
          common_groups = [(5, 6), (4,)]
      """
      group1_list = {tuple(sorted(_group)) for _group in groups1}
      group2_list = {tuple(sorted(_group)) for _group in groups2}
      common_groups = list(group1_list.intersection(group2_list))
      return common_groups