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]: ['287', 'y', 'b', '79', '39', 'l']
[EX A]: 2, 3, 7, 8, 9

[EX Q]: ['j', 'a', '29', 'y', 's', '107', '149', '499', '37', 'o', '289', 't']
[EX A]: 0, 1, 2, 3, 4, 7, 8, 9

[EX Q]: ['49', 'o', 'l', '67', '261', 'a', '437', '107']
[EX A]:
0, 1, 2, 3, 4, 6, 7, 9