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: ['k', 'a', '437', '461', 'b', '341', '175']

A: 1, 3, 4, 5, 6, 7
****
Q: ['j', 'w', 'h', 'r', 'w', 'h', 'd', 'f', '81', 'g', '145']

A: 1, 4, 5, 8
****
Q: ['11', 'c', 'v', 'r', '67', 'o', 'e']

A:
1, 6, 7
****