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', '493', 's', 'f', '279', 'f']

A: 2, 3, 4, 7, 9
****
Q: ['475', 'd', '467', 'h', 'r', 'r', '139', '307', '141', 'f']

A: 0, 1, 3, 4, 5, 6, 7, 9
****
Q: ['o', 'i', '93', 'o', '379', 'w', 'm', 'd']

A:
3, 7, 9
****