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]: ['71', '7', '341', '199', 'z', 'x', '201']
[EX A]: 0, 1, 2, 3, 4, 7, 9

[EX Q]: ['g', 'j', '239', 'w', 'q', 'm', 'a', 'l', 'n', 'p', 'i', 'r']
[EX A]: 2, 3, 9

[EX Q]: ['127', 'i', '207', 'u', '29', 'h', '67', 'p', 'j', 'h', 'b']
[EX A]:
0, 1, 2, 6, 7, 9