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]: ['73', '215', '389', '381', 'e', 'v', 'j', 'l', 'r']
[EX A]: 1, 2, 3, 5, 7, 8, 9

[EX Q]: ['17', '259', '451', 't', 'c', 'i', '433', 'g']
[EX A]:
1, 2, 3, 4, 5, 7, 9