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:
['239', 's', 'h', 'w', '131', 'i', 'x']
answer:
1, 2, 3, 9


question:
['v', 't', '81', '223', 'b', 'b', '313', '151', '63']
answer:
1, 2, 3, 5, 6, 8


question:
['f', 'u', 'f', '305', '163', 't', '143', 'w']
answer:

0, 1, 3, 4, 5, 6