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: ['y', '281', '313', '21', 'i', '377', 'e', '111', '71', '231', '409', 'k']

A: 0, 1, 2, 3, 4, 7, 8, 9
****
Q: ['99', 'p', 'v', '49', 's', '279', 'v', '287', '355', 'o', '131', 'd', 'b']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['479', '353', 'd', 'v', 'q', 'x', 'c', 'x', '283', 'e']

A:
2, 3, 4, 5, 7, 8, 9
****