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]: ['t', '437', 'o', 'w', 'x', 'e', 'r', 'r', '149', 'd', '391']
[EX A]: 1, 3, 4, 7, 9

[EX Q]: ['y', 'm', '121', 'h', 'm', '189', '117', '257', 'y', '181', '279', 'a', '453']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['w', '71', '163', 'z', '137', '325']
[EX A]:
1, 2, 3, 5, 6, 7