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:
['87', '353', '329', '163', 'i', 'd', '287']
answer:
1, 2, 3, 5, 6, 7, 8, 9


question:
['353', 'd', 'h', 'd']
answer:
3, 5


question:
['u', 'f', '27', 'o', 'x', 'v', 'x', 'u', '137', 'u', '251', 'v', '413']
answer:

1, 2, 3, 4, 5, 7