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:
['v', 't', '81', '223', 'b', 'b', '313', '151', '63']
answer:
1, 2, 3, 5, 6, 8


question:
['387', '7', '93', '105', '181']
answer:
0, 1, 3, 5, 7, 8, 9


question:
['43', 'c', 'e']
answer:

3, 4