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:
['t', '197', '129', 'u', 'l', 'y', '485', '57', '147', 'p', '137', 'v', '221']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['g', 'l', '467', 'e', '79', '33', 'j', 'f', '3', '343', 'o']
answer:

3, 4, 6, 7, 9