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]: ['e', '313', '259', 'i', 'h']
[EX A]: 1, 2, 3, 5, 9

[EX Q]: ['475', 's', '123', '389', 'y', 'm', 'v', '47', 'u', '479', '357', '279', '137', 'l', 'i']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['t', '387', 'r', 'o', '89', '295', 'u', 'b']
[EX A]:
2, 3, 5, 7, 8, 9