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]: ['s', '291', '257', 'w', '497', '309']
[A]: 0, 1, 2, 3, 4, 5, 7, 9


[Q]: ['45', '95', 'y', '363', '265', '307', '309', '423']
[A]: 0, 2, 3, 4, 5, 6, 7, 9


[Q]: ['o', 'i', '167', '231', 'y', '469', 'p', 'p', 'm', 'r', '213', 'g', '3', 'u', 'x']
[A]:
1, 2, 3, 4, 6, 7, 9