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:
['h', '477', 'w', '315', 'k', 'd', '367', '411', '207', 'b', '81', 'k', 'f', '107', '103']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8


question:
['a', '55', 's', '71', '271', '211']
answer:
1, 2, 5, 7


question:
['69', '153', 'w', 'z', 'h', 'v', '39', '245', '475', 'k']
answer:

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