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:
['61', '255', 'u', '219', '197', 'i', '453', 'i', '267', '217', 'o', 'g']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['69', '307', 'l', 'j', '167', 'o', '427', 'j']
answer:
0, 1, 2, 3, 4, 6, 7, 9


question:
['f', 'b', '475', 'c', 'z']
answer:

4, 5, 7