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: ['375', '457', '423', 'q', 't']

A: 2, 3, 4, 5, 7
****
Q: ['e', 'o', 'c', 'j', 'g', '249', 's', 'b', 'f', '359', '107', 'i']

A: 0, 1, 2, 3, 4, 5, 7, 9
****
Q: ['h', 'p', '93', 'd']

A:
3, 9
****