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', 'u', '199', 'v', '249']
1, 2, 4, 9

['173', 'i', 'w', '425', '27', 'd']
1, 2, 3, 4, 5, 7

['x', '241', 'w', 'm', 'q']

1, 2, 4