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:
['379', '485', '415', '37', '221', '125', '245', '87', 'a']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['233', '189', '217', 's', '221', 'v', 'c', 'x', '455']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['73', 'l', '471', 'u', 'r', 'k', 'c', '111', 'y']
answer:

1, 3, 4, 7