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]: ['311', '147', 'a', '149', 'h']
[EX A]: 1, 3, 4, 7, 9

[EX Q]: ['d', '71', '65', '177', 'k']
[EX A]: 1, 5, 6, 7

[EX Q]: ['y', 'a', '307', '281', 'g', '373', '445', '431', 'x', '427']
[EX A]:
0, 1, 2, 3, 4, 5, 7, 8