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: ['i', 'z', '131', '449', '141', 's']

A: 1, 3, 4, 9
****
Q: ['m', '107']

A: 0, 1, 7
****
Q: ['273', '47', 'c', '323', 'h', 'r', 'w', '373']

A:
2, 3, 4, 7
****