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.

[Q]: ['p', 'r', 'e', 'b', '149', '361', 'i']
[A]: 1, 3, 4, 6, 9


[Q]: ['z', 'c', 'n', '351', 'f', '239', '71', '351', 'b', '1', '321', 'h', '163']
[A]: 1, 2, 3, 5, 6, 7, 9


[Q]: ['249', 'a', 'o', 'o', 'k', 'q', 'o', '379', '291', 'a', 'h']
[A]:
1, 2, 3, 4, 7, 9