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: ['487', 'x']

A: 4, 7, 8
****
Q: ['257', '111', 'g', '277', '473', '105', 'x', '217']

A: 0, 1, 2, 3, 4, 5, 7
****
Q: ['h', '439', 'f', 'i', 'h', '131', '491', 'w', '425']

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