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', 'v', '469', 'n']

A: 4, 6, 9
****
Q: ['o', 'e', '187', '153', 'a', '253', 'f']

A: 1, 2, 3, 5, 7, 8
****
Q: ['117', '247', '49', '63']

A:
1, 2, 3, 4, 6, 7, 9
****