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: ['y', 'b']

A: -1
****
Q: ['97', '289', 's', '111', '87', '241', '85', 'l']

A:
1, 2, 4, 5, 7, 8, 9
****