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]: ['71', 't', '267', 'x', 'l', '95', '439', '51', 'i', '497', '469', 'k', '341', 'y']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['447', '77', '337', 'i', '257', '477', 'l', 'm', '357', 'k', '293', '425', 's']
[EX A]: 2, 3, 4, 5, 7, 9

[EX Q]: ['31', 'l', '65', '453']
[EX A]:
1, 3, 4, 5, 6