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]: ['39', '461', '163', '379', '331', '137', 'g', 'm']
[A]: 1, 3, 4, 6, 7, 9


[Q]: ['7', 'n', '443', '131', '189', '187', '261', '451', '449', 'o', 'i', 't', '15']
[A]: 1, 2, 3, 4, 5, 6, 7, 8, 9


[Q]: ['i', '403', '19', '135']
[A]:
0, 1, 3, 4, 5, 9