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:
['43', '479', '317', 'w', '475', '255', '3', 'x']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['h', 'l', 'x', 'v', 'v', '413', 'p', '45', '105', '183', 'p', 'k']
answer:
0, 1, 3, 4, 5, 8


question:
['p', '239', 'i', '253', '351', '337', 'd', 'c', '427', 'b', 'i']
answer:

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