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]: ['157', 'k', 'o', 'a', '279', 'g']
[EX A]: 1, 2, 5, 7, 9

[EX Q]: ['r', 'u', '83', 'x', '155', '89', 'c', '391', '41', 'o', 'i', '161']
[EX A]: 1, 3, 4, 5, 6, 8, 9

[EX Q]: ['t', 'v', 'u', 'i', '239', '83', '445', '391', 'x', 'y', '307', 'a', 't']
[EX A]:
0, 1, 2, 3, 4, 5, 7, 8, 9