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]: ['a', '491', '477', '193', 'b', 'l', 'c']
[EX A]: 1, 3, 4, 7, 9

[EX Q]: ['x', '493', 'x', '211', 'n', '143', '277', '191']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['73', '347', '73', '287', 's', '475', 'm', '497', '365', '127', '3', 'l', 'j', '69', '211']
[EX A]:
1, 2, 3, 4, 5, 6, 7, 8, 9