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.

[EX Q]: ['165', '219', 'r', 's', '191', 'k', '39']
[EX A]: 1, 2, 3, 5, 6, 9

[EX Q]: ['43', '479', '317', 'w', '475', '255', '3', 'x']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['f', '409', 'f', 'n', 'b', 'f', 'f', '245']
[EX A]:
0, 2, 4, 5, 9