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:
['f', '253', '211', '85', 'm', 'y', 'l', 'r', 't', 'm', '193', 'p', '415', 'h', 'h']
answer:
1, 2, 3, 4, 5, 8, 9


question:
['411', 'n']
answer:
1, 4


question:
['o', 'g', 'k', 'v', '23', '423', 'e', 's']
answer:

2, 3, 4