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', 'w', 'k']
answer:
-1


question:
['f', '73', 'k', '333', '345', 'e', 'x', 'j']
answer:
3, 4, 5, 7


question:
['271', '389', 'z', 'g', '9', 'k', 'g', '285']
answer:

1, 2, 3, 5, 7, 8, 9