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: ['129', '373', '461', 'h', 'r', '163', '361', '483', '463', 'e', 'z', 'l']

A: 1, 2, 3, 4, 6, 7, 8, 9
****
Q: ['h', 'l', '43', 'b', 'g', '265', '355', 'y']

A: 2, 3, 4, 5, 6
****
Q: ['479', 'v', 'u', '337', 'p']

A:
3, 4, 7, 9
****