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: ['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']

A: 2, 3, 4, 7, 9
****
Q: ['o', 'f', 'm', 'w', 'w', 'y', 'b']

A: -1
****
Q: ['247', '369']

A:
2, 3, 4, 6, 7, 9
****