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]: ['o', '61', '475', '457', 'a', 'o', 'z', '227', '415', 'z', 'x', 'y', '73', '205', 'y']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7

[EX Q]: ['23', 'p', '409', '305', 'z', 'q', '295', '391']
[EX A]: 0, 1, 2, 3, 4, 5, 9

[EX Q]: ['355', '71', '247', 'a', '323', '255']
[EX A]:
1, 2, 3, 4, 5, 7