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]: ['149', 'o', '237', 't', 'k', 'w']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['j', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']
[EX A]: 1, 2, 3, 4, 5, 6, 7

[EX Q]: ['d', '25', '323', 'k', 'e']
[EX A]:
2, 3, 5