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]: ['185', '425']
[EX A]: 1, 2, 4, 5, 8

[EX Q]: ['407', 'a', 'l', '307', 'a']
[EX A]: 0, 3, 4, 7

[EX Q]: ['211', 'j', '307', 't', 'i', 's']
[EX A]:
0, 1, 2, 3, 7