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:
['v', 'j', 'l', 'f', 'n', '185', 'x', '367']
answer:
1, 3, 5, 6, 7, 8


question:
['305', '447', '125', 'c', '469', '231', 'c', '33', 'r', '69', 'p', 'b', '143']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 9


question:
['o', '323', '141', '363', 'p', '117', 'o']
answer:

1, 2, 3, 4, 6, 7