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:
['41', 'o', 'm', 'h', 's', 't', '407', '445', '371', '93', '291', '457', 'r', '391', 'a']
answer:
0, 1, 2, 3, 4, 5, 7, 9


question:
['455', '447', 'x', '479', 'b', '267', '339', '29', '267']
answer:
2, 3, 4, 5, 6, 7, 9


question:
['t', 'i', '241', 'g', 'x', 'w', '119']
answer:

1, 2, 4, 9