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]: ['u', '341', '151', '1', '157', '211', '189']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['d', '335', '23', '461', '497', 'p', '313']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['215', 's', 'a', '227', '435', 'p', '5', 'h']
[EX A]:
1, 2, 3, 4, 5, 7