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:
['353', '195', '297', '175', 'u', 'p', 'r', 'l']
answer:
1, 2, 3, 5, 7, 9


question:
['229', 'x', '49', 'p', '73', '77', '337', '497']
answer:
2, 3, 4, 7, 9


question:
['327', 'j', 'y']
answer:

2, 3, 7