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:
['271', '9', 'v', '93', 'f', 'd']
answer:
1, 2, 3, 7, 9


question:
['j', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']
answer:
1, 2, 3, 4, 5, 6, 7


question:
['47', '131', '233', '279', '473', 'y', '339', 'q', 'z', 's', 't', '113', 'm', '375']
answer:

1, 2, 3, 4, 5, 7, 9