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:
['357', 'c', 'f', '3', 'q', 'w', 'm', 'l', '137', 'k']
answer:
1, 3, 5, 7


question:
['o', 'e', '187', '153', 'a', '253', 'f']
answer:
1, 2, 3, 5, 7, 8


question:
['251', 'o', 'l', 'q', 'u', 'b', 'u', '51', '353']
answer:

1, 2, 3, 5