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]: ['25', 'n', 'n', '481', 'w', '91', '251']
[EX A]: 1, 2, 4, 5, 8, 9

[EX Q]: ['401', 'a', '273', 'c', '117', 'x', 'b', 'h', 's', 'v']
[EX A]: 0, 1, 2, 3, 4, 7

[EX Q]: ['i', '367', 'm', 'g', 't', 'x', 'r', 'l']
[EX A]:
3, 6, 7