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]: ['x', '493', 'x', '211', 'n', '143', '277', '191']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']
[EX A]: 1, 3, 4, 5, 7, 8, 9

[EX Q]: ['n', '483', '109', 'y', '461', '143', '307', '67']
[EX A]:
0, 1, 3, 4, 6, 7, 8, 9