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.

['477', 'a', 'n', 'r', '457', 'g', 'c']
4, 5, 7

['k', 'a', '437', '461', 'b', '341', '175']
1, 3, 4, 5, 6, 7

['239', 'c', '283', '349', 'z', 'd', 'a', 'z', '427', '209', 'p', 'w', 'i', 'd', 'n']

0, 2, 3, 4, 7, 8, 9