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: ['381', '129']

A: 1, 2, 3, 8, 9
****
Q: ['h', 't', '371', 'e', '153', 'b']

A: 1, 3, 5, 7
****
Q: ['445', '449']

A:
4, 5, 9
****