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]: ['f', 'f', '149', '311', '331', 'l', 'u', '349', 'v', 'v', '417', '285']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['361', 'w', '481', '423', 'v', 'u']
[EX A]:
1, 2, 3, 4, 6, 8