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]: ['291', 'p', '261', 'z', '21', 'w', 't', '417']
[EX A]: 1, 2, 4, 6, 7, 9

[EX Q]: ['t', '103', '349', '203', 'b', 'z', 'i', '337', 'y', '137', '77', 'p', 'k']
[EX A]: 0, 1, 2, 3, 4, 7, 9

[EX Q]: ['181', '347', '295', '297', 'v', 'o', '229', 'w']
[EX A]:
1, 2, 3, 4, 5, 7, 8, 9