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:
['251', '173', '301', '339', '267', 'p', '347']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 9


question:
['y', 'v', '311', 'f', '273']
answer:
1, 2, 3, 7


question:
['h', 'x', '217', '153', '297', 'l', '125', 's', '335', '83', 'x', '17']
answer:

1, 2, 3, 5, 7, 8, 9