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:
['t', '361', 'o', 'j', '395', 'u', '211', 'a', 'i', 'i', '375', 'h', '451']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['k', '217']
answer:
1, 2, 7


question:
['x', '29', '179', 'b', '495', '361', '317', 'k', 'g', 'a']
answer:

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