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]: ['291', 'p', '261', 'z', '21', 'w', 't', '417']
[A]: 1, 2, 4, 6, 7, 9


[Q]: ['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
[A]: 1, 2, 3, 5, 7, 8, 9


[Q]: ['29', '251', '243', 'i', 'y', 'v', 'w', 'x']
[A]:
1, 2, 3, 4, 5, 9