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: ['n', 'm', 'u', '267']

A: 2, 6, 7
****
Q: ['n', 'f', '355', 'e', '113', '131', '443', '275', '249', '487']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['u', '177', 'h', '135', '157', 'r', '285', '309', 'd', 'm', 'r', 'q']

A:
0, 1, 2, 3, 5, 7, 8, 9
****