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: ['205', '347', '423', 'm', '363', 'u', 'g']

A: 0, 2, 3, 4, 5, 6, 7
****
Q: ['g', '109', 'm', '169', '443', 'm', '57', '285', 'x', '171', '367']

A: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
****
Q: ['249', 'x']

A:
2, 4, 9
****