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.

['k', 'q', 'a', 'u', 'q']
-1

['b', 'm', '471']
1, 4, 7

['155', '145', '115', 's']

1, 4, 5