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.

['o', 'k', 'i']
-1

['119', '189', 'k', 'e', '425', '21', '245']
1, 2, 4, 5, 8, 9

['x', '17', 'o']

1, 7