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: ['u', '343', '167', 'a']

A: 1, 3, 4, 6, 7
****
Q: ['u', '207', 'q', '371', 's', '51', '217', 'q', '255', '9', '109', 'l', 'b', 'w']

A: 0, 1, 2, 3, 5, 7, 9
****
Q: ['461', 'j', 't', 'q']

A:
1, 4, 6
****