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:
['87', '353', '329', '163', 'i', 'd', '287']
answer:
1, 2, 3, 5, 6, 7, 8, 9


question:
['d', '395', 'd', '233', '271']
answer:
1, 2, 3, 5, 7, 9


question:
['l', 'g', '27', 'f', 'a', '321', '163', 't', 't', '207', 'y', '33', 'z']
answer:

0, 1, 2, 3, 6, 7