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]: ['t', 'p', 'j', 'x', 'k', '295', '221', '261', '221', 'b', '431', '427']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']
[EX A]: 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['z', '143', 'o', '365', 'g', 'h', 'y', 'p', 'j']
[EX A]:
1, 3, 4, 5, 6