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: ['f', '73', 'k', '333', '345', 'e', 'x', 'j']

A: 3, 4, 5, 7
****
Q: ['379', '485', '415', '37', '221', '125', '245', '87', 'a']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['b', 'a']

A:
-1
****