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.

['239', '439']
2, 3, 4, 9

['91', '291', '379', 'k', 'a', 't', 'i', '355', 'l', '335', '119', '343']
1, 2, 3, 4, 5, 7, 9

['d', '443']

3, 4