def extract_index_list(l1, l2, l3):
    
    result = []
    for m, n, o in zip(l1, l2, l3):
        if (m == n == o):
            result.append(m)
    return result
def similar_elements(test_tup1, test_tup2):
  
  res = tuple(set(test_tup1) & set(test_tup2))
  return (res) 