instruction:
In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
question:
['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
answer:
1, 2, 3, 5, 7, 8, 9


question:
['61', '417', '437', '489', '383', 'n', '11', 'o', 'a', 'v', '37', 'q', '317']
answer:
1, 3, 4, 6, 7, 8, 9


question:
['z', '463', '303', '357', '127', 'q', '351', 'n', '267', 'x', 'e', '463']
answer:

0, 1, 2, 3, 4, 5, 6, 7