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]: ['397', '287', '401', '97']
[EX A]: 0, 1, 2, 3, 4, 7, 8, 9

[EX Q]: ['13', 'p', '427', 's', 'x', 'x', '43', 'h', 'j', 'z', '21']
[EX A]: 1, 2, 3, 4, 7

[EX Q]: ['b', 's', '273', '325', '443', 'j', 'z', 'w', '443', '273', 'g', '163']
[EX A]:
1, 2, 3, 4, 5, 6, 7