input: Write a function to combine the elements of two lists into a list of tuples. Each tuple should contain one element from each list, corresponding to their positions. If one list is shorter, the remaining elements of the longer list should be ignored.
  assert combine_list([1, 2, 3], [4, 5, 6])==[(1, 4), (2, 5), (3, 6)]
  assert combine_list([1, 2], [4, 5, 6])==[(1, 4), (2, 5)]
output: def combine_list(list1, list2):
      return [(list1[i], list2[i]) for i in range(min(len(list1), len(list2)))]