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:
['s', '95', 'j', '173', '437', '143', 'n', '357', 'w', '239', '219']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['261', '227', 'f', 'w', '141', 'k', '119', '407', '409', '373']
answer:
0, 1, 2, 3, 4, 6, 7, 9


question:
['x', '299', '427', 'x', 'm', 'c', 't', '291', '139', '143']
answer:

1, 2, 3, 4, 7, 9