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]: ['k', 'x', '299', 'a', 'y', '105', 's', '249', 'g', '439', 'k', '1', 'h', 'd', '43']
[EX A]: 0, 1, 2, 3, 4, 5, 9

[EX Q]: ['v', 'q', '139', '79', '149', '469', 'g', '239', '221', 'v', '77']
[EX A]: 1, 2, 3, 4, 6, 7, 9

[EX Q]: ['183', 'x', 'e', 'y', '173', 'c', 'q', '177', '483', '261', 'w', 'e', 'q', '387']
[EX A]:
1, 2, 3, 4, 6, 7, 8