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]: ['475', 'j', '19', 'j', '325']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['h', '281', 'x', '471']
[EX A]: 1, 2, 4, 7, 8

[EX Q]: ['i', 'r', 'v', 'd', '279']
[EX A]:
2, 7, 9