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

[EX Q]: ['q', 'g', 'z', '309']
[EX A]: 0, 3, 9

[EX Q]: ['321', '417']
[EX A]:
1, 2, 3, 4, 7