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]: ['305', '447', '125', 'c', '469', '231', 'c', '33', 'r', '69', 'p', 'b', '143']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['71', 't', '93', '301', 'g', '447', '373', 'd', '133', 'r']
[EX A]: 0, 1, 3, 4, 7, 9

[EX Q]: ['361', 'b', 'a', 'l', '161', 'x', 'i', '21', '349', 'z', 'n', '125', '235']
[EX A]:
1, 2, 3, 4, 5, 6, 9