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.

Q: ['y', '281', '313', '21', 'i', '377', 'e', '111', '71', '231', '409', 'k']

A: 0, 1, 2, 3, 4, 7, 8, 9
****
Q: ['171', 'h', '53', 'o', 'q']

A: 1, 3, 5, 7
****
Q: ['w', 'd', 'n', '497', 'y', 'i', '471', 's', 's', '441']

A:
1, 4, 7, 9
****