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: ['t', '211', 'h', '99']

A: 1, 2, 9
****
Q: ['h', '281', '113', '119', 'j', '245', 'i', '121', '439']

A: 1, 2, 3, 4, 5, 8, 9
****
Q: ['i', 'z', '131', '449', '141', 's']

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