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.

['x', '493', 'x', '211', 'n', '143', '277', '191']
1, 2, 3, 4, 7, 9

['v', 'w', 'k']
-1

['c', '423', '443']

2, 3, 4