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:
['r', 'o', 'n', '219', 'a', '419', 'x', '261', 'h', 's', '373', '155', 's', '171']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['h', '309', 'q', 'w', '367', '245', '181', 'w', '377', '33']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9


question:
['r', 'a', 't', '381', 'k', 'h', 'x', '213', '435', 'n', 'd', 'u', 't', '49', '345']
answer:

1, 2, 3, 4, 5, 8, 9