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:
['i', 'b', 'w', '409', 'f', '67', 's', '21', 'y', 'c', '401', 'f', 'k', '319']
answer:
0, 1, 2, 3, 4, 6, 7, 9


question:
['487', 'x']
answer:
4, 7, 8


question:
['q', '327', 'q', '191', 'd', '53', 'r', '465']
answer:

1, 2, 3, 4, 5, 6, 7, 9