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: ['c', 'h', '151', 'g', 'd', 'd', 'k', '37']

A: 1, 3, 5, 7
****
Q: ['x', '91', 'q', '417', '385', '455', '393', 'm', 's', 'c', '91', '71', 'n']

A: 1, 3, 4, 5, 7, 8, 9
****
Q: ['251', '345', 'h', 's', '385', 'j', '145', '41', 'u', '403', '429']

A:
0, 1, 2, 3, 4, 5, 8, 9
****