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]: ['e', 's', '271', 'k', 'e', 'y', '89']
[EX A]: 1, 2, 7, 8, 9

[EX Q]: ['i', '249', '287']
[EX A]: 2, 4, 7, 8, 9

[EX Q]: ['x', '263', 'o', 'e', '471', '161', '379', '297', '497', '393', 'j', '249']
[EX A]:
1, 2, 3, 4, 6, 7, 9