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: ['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']

A: 1, 2, 3, 5, 7, 8, 9
****
Q: ['c', '317', 'z', 'z', 'h', '227', '439', 'x', 'f']

A: 1, 2, 3, 4, 7, 9
****
Q: ['445', '347', 'z', '107', 'd', '457', 'b']

A:
0, 1, 3, 4, 5, 7
****