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: ['43', '479', '317', 'w', '475', '255', '3', 'x']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['h', 'i', 'e', '319', 'g', '187', '395', 'f', '327', 'y']

A: 1, 2, 3, 5, 7, 8, 9
****
Q: ['y', '125', 'm']

A:
1, 2, 5
****