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]: ['p', '121', '55', '205', 'n', '393', 'l', 's', 'k', 'c', 'n']
[EX A]: 0, 1, 2, 3, 5, 9

[EX Q]: ['s', 't', '189', 'j', 'r']
[EX A]: 1, 8, 9

[EX Q]: ['417', '367', '405', '81', '217', '305', 'o', 'i', 'f']
[EX A]:
0, 1, 2, 3, 4, 5, 6, 7, 8