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', '325', '117', 'k', 'y', 'x', '49', '349', '477', 'u', '435']
answer:
1, 2, 3, 4, 5, 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:
['497', '251', 'l', 'v', 't', 'x', 'z', 'v']
answer:

1, 2, 4, 5, 7, 9