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]: ['479', 's', 'g']
[EX A]: 4, 7, 9

[EX Q]: ['167', '229', '439', '389', '483', '207']
[EX A]: 0, 1, 2, 3, 4, 6, 7, 8, 9

[EX Q]: ['j', 'w', '279', 'm', '19', 'h', 'j', 'g', 't', '229', '51', '389', 't']
[EX A]:
1, 2, 3, 5, 7, 8, 9

