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]: ['385', 'k', 'a', 't', 'o', 'b', 'g', 'u', '319', 'e', '315', '365']
[EX A]: 1, 3, 5, 6, 8, 9

[EX Q]: ['223', '55', 'l', '461']
[EX A]: 1, 2, 3, 4, 5, 6

[EX Q]: ['x', '263', 'u', '427', 'u', '439', 'w']
[EX A]:
2, 3, 4, 6, 7, 9