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: ['71', 't', '267', 'x', 'l', '95', '439', '51', 'i', '497', '469', 'k', '341', 'y']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['r', '233']

A: 2, 3
****
Q: ['h', '387', '135', 'm', '235', '383', 'z']

A:
1, 2, 3, 5, 7, 8
****