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]: ['173', 'i', 'w', '425', '27', 'd']
[EX A]: 1, 2, 3, 4, 5, 7

[EX Q]: ['d', '71', '65', '177', 'k']
[EX A]: 1, 5, 6, 7

[EX Q]: ['25', 'm', 't', '417', '377', '211', 'h', 'k', 'x']
[EX A]:
1, 2, 3, 4, 5, 7