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]: ['143', 'i', '499', 't', '27']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['213', '321', 'z']
[EX A]: 1, 2, 3

[EX Q]: ['y', '271']
[EX A]:
1, 2, 7