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: ['397', 'x', 'e', '179', '105', '381']

A: 0, 1, 3, 5, 7, 8, 9
****
Q: ['227', '161', '389', 'g', 'g', 'i', 'm', '199', '487', '65', '341', '377', 'x', 'r']

A: 1, 2, 3, 4, 5, 6, 7, 8, 9
****
Q: ['157', 'k', 'o', 'a', '279', 'g']

A:
1, 2, 5, 7, 9
****