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: ['215', '391', '251', '177']

A: 1, 2, 3, 5, 7, 9
****
Q: ['157', '481', 'n', 't', 'd', 'j']

A: 1, 4, 5, 7, 8
****
Q: ['p', 'r', '139', 'h', '343', 'f', '79', 'a', 'r', 'i', 't']

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