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:
['217', 'c', 'h', 'e', 't', '331', '69']
answer:
1, 2, 3, 6, 7, 9


question:
['g', '411', '307', 'i', '483', 'z', '29', 't', 'f', 'z']
answer:
0, 1, 2, 3, 4, 7, 8, 9


question:
['307', 'm', 'k', '389']
answer:

0, 3, 7, 8, 9