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]: ['291', 'p', '261', 'z', '21', 'w', 't', '417']
[EX A]: 1, 2, 4, 6, 7, 9

[EX Q]: ['o', '105', '409', '287', '9', '377', 'h', 'v', 'i', 'j', 'm', '59', 's', '357']
[EX A]: 0, 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['391', 'w', '275', 'e', 'n', '65', 'k', 'r']
[EX A]:
1, 2, 3, 5, 6, 7, 9