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]: ['h', '475', 'x', '53', '461', 'c']
[EX A]: 1, 3, 4, 5, 6, 7

[EX Q]: ['437', 'e', 'b', 'f', '203', 't', '5', '461', 'e', '367', '391', '81']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['g', '379', '93', '199', 'i', 's', 'w', '41', '417', 'v', 'd']
[EX A]:
1, 3, 4, 7, 9