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: ['223', '71']

A: 1, 2, 3, 7
****
Q: ['i', 'z', '131', '449', '141', 's']

A: 1, 3, 4, 9
****
Q: ['n', '117', 'f', '219']

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