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

[EX Q]: ['359', '233', '455', '449', 'h']
[EX A]: 2, 3, 4, 5, 9

[EX Q]: ['379', 'k', '499', 'z', 'm', 'h']
[EX A]:
3, 4, 7, 9