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:
['171', 'h', '53', 'o', 'q']
answer:
1, 3, 5, 7


question:
['u', 'c', 'f', 'z', '51', '301', 'q', '275']
answer:
0, 1, 2, 3, 5, 7


question:
['s', '367', 'f', 'k', '345', '421', 'b', 'z', '63', 'i', 'f', '343', '49', '325', 'x']
answer:

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