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


[Q]: ['99', 'p', 'v', '49', 's', '279', 'v', '287', '355', 'o', '131', 'd', 'b']
[A]: 1, 2, 3, 4, 5, 7, 8, 9


[Q]: ['r', 'h', '73']
[A]:
3, 7