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: ['497', '21', '239', '487', '149', 'q']

A: 1, 2, 3, 4, 7, 8, 9
****
Q: ['c', '155', '61']

A: 1, 5, 6
****
Q: ['w', 'd', 'd', 's', 'c', 't', 'e', 'g', '103', '235', '117', '387', 'k', 's', 'z']

A:
0, 1, 2, 3, 5, 7, 8
****