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: ['r', 'o', 'n', '219', 'a', '419', 'x', '261', 'h', 's', '373', '155', 's', '171']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['f', 't', 'a', '163', '297', '97', '487', '341', '193']

A: 1, 2, 3, 4, 6, 7, 8, 9
****
Q: ['h', '267', '283', 'a', 'z', '199', 'z']

A:
1, 2, 3, 6, 7, 8, 9
****