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:
['25', 'n', 'n', '481', 'w', '91', '251']
answer:
1, 2, 4, 5, 8, 9


question:
['85', '53', '43', 'j', 'e', '443', '231', 'z', 'f', 'v', '235', '377']
answer:
1, 2, 3, 4, 5, 7, 8


question:
['z', 'q', 'l', 'o', '409', '115', 'j', '445', '495', '475', '167', 'y', '361', '253', '77']
answer:

0, 1, 2, 3, 4, 5, 6, 7, 9