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]: ['o', 'e', '187', '153', 'a', '253', 'f']
[EX A]: 1, 2, 3, 5, 7, 8

[EX Q]: ['t', '233', '207', '333', 'c', '265', '25', '231']
[EX A]:
0, 1, 2, 3, 5, 6, 7