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:
['45', 'n', 'u', '199', 'y', 'w']
answer:
1, 4, 5, 9


question:
['299', '371', '313', '17', 't', 'q']
answer:
1, 2, 3, 7, 9


question:
['97', '227', '37', 'm', 'l', 'a', '233', '287', 'z', 'l', '305', '91', 'c']
answer:

0, 1, 2, 3, 5, 7, 8, 9