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: ['z', 'z', '273']

A: 2, 3, 7
****
Q: ['v', '477', 'j', '339', '245', 'r', '417', 'g', '475', 'n', 'q', '171']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['439', '25', 'r', '21', 'z', '437', 'p', 'n', '353', 'r', 'x', 'q', '487', 'n']

A:
1, 2, 3, 4, 5, 7, 8, 9
****