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]: ['n', '319', 's', '325', '177', '161', '43', 'g', 'o', '59', 'w', 'y', 'g', 'm']
[A]: 1, 2, 3, 4, 5, 6, 7, 9


[Q]: ['w', '195', '449', 'z', 'm', 'u', '187', 'l', 't', 'b', 'l']
[A]:
1, 4, 5, 7, 8, 9