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]: ['223', '71']
[EX A]: 1, 2, 3, 7

[EX Q]: ['233', '35', 'l', 'j', '89', 'r', 't']
[EX A]: 2, 3, 5, 8, 9

[EX Q]: ['v', 'b']
[EX A]:
-1