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:
['q', '403', '293', '245', '303', '145', 'u', '385', 'c', 'p', 'r', 'y', '53']
answer:
0, 1, 2, 3, 4, 5, 8, 9


question:
['k', 'k', 'o', 'c', 'p', '301', 'o']
answer:
0, 1, 3


question:
['323', '31', 'a', 'o', 'e', 'v', 'n', '173', '167', 'q', '203', '287', 'r']
answer:

0, 1, 2, 3, 6, 7, 8


