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: ['425', 'x', 'u', 'f', 'v', '481', 'm', 'y', '159', '1']

A: 1, 2, 4, 5, 8, 9
****
Q: ['y', '439', 't', '29', '425', '289']

A: 2, 3, 4, 5, 8, 9
****
Q: ['k', '11', 'o', 'e', '379', 't', '187', '427', 'k', 't']

A:
1, 2, 3, 4, 7, 8, 9
****