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: ['395', 'p', '373']

A: 3, 5, 7, 9
****
Q: ['u', '157', '63', '411', 'x', 'c', 'k', 'z', 'i', '279', '311', '431']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['445', 'n']

A:
4, 5
****