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:
['l', 'z', '453', '361', 'p', 'c', 'n', '77', '113', '261', 'g']
answer:
1, 2, 3, 4, 5, 6, 7


question:
['71', 't', '267', 'x', 'l', '95', '439', '51', 'i', '497', '469', 'k', '341', 'y']
answer:
1, 2, 3, 4, 5, 6, 7, 9


question:
['473', 'm', '63', 'b', 'h', '439']
answer:

3, 4, 6, 7, 9