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:
['y', '439', 't', '29', '425', '289']
answer:
2, 3, 4, 5, 8, 9


question:
['t', '103', '349', '203', 'b', 'z', 'i', '337', 'y', '137', '77', 'p', 'k']
answer:
0, 1, 2, 3, 4, 7, 9


question:
['319', 'z', 'l', 'v', '445', 'n', '91', '79', '47', '201', '471']
answer:

0, 1, 2, 3, 4, 5, 7, 9