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.

['143', 'i', '499', 't', '27']
1, 2, 3, 4, 7, 9

['u', 'r']
-1

['349', 's', 'v', '387', 'k']

3, 4, 7, 8, 9