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]: ['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']
[EX A]: 1, 3, 4, 5, 7, 8, 9

[EX Q]: ['s', 'y', '133', 'c', '415', 'p']
[EX A]: 1, 3, 4, 5

[EX Q]: ['i', '61', 'g', 'c', '47']
[EX A]:
1, 4, 6, 7