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


question:
['63', 'd', 'd', 'h', 'p', 'j', 'c', '11', 'p', '405', 'k', '59', 'p']
answer:
0, 1, 3, 4, 5, 6, 9


question:
['n', '39', 's', '493', '483']
answer:

3, 4, 8, 9