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:
['279', 'm', '453', 's', 'x', 'g', 'i', 'x', 'd']
answer:
2, 3, 4, 5, 7, 9


question:
['101', '473', '25', 'i', '117']
answer:
0, 1, 2, 3, 4, 5, 7


question:
['c', '269', '59', 'h', 'x', '333']
answer:

2, 3, 5, 6, 9