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.

['405', 'x', '163', 'z', 'z', '261', 'o']
0, 1, 2, 3, 4, 5, 6

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

['g', '243', '359', 'u']

2, 3, 4, 5, 9