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:
['429', 'a', 'g', '7', 'j', 'd', 'y', '113']
answer:
1, 2, 3, 4, 7, 9


question:
['437', '377']
answer:
3, 4, 7


question:
['297', '433', 'z']
answer:

2, 3, 4, 7, 9