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]: ['415', '365', '373', 't', 'n']
[EX A]: 1, 3, 4, 5, 6, 7

[EX Q]: ['n', 'g', 'd']
[EX A]: -1

[EX Q]: ['71', '45', '351', 'b']
[EX A]:
1, 3, 4, 5, 7