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]: ['215', '391', '251', '177']
[A]: 1, 2, 3, 5, 7, 9


[Q]: ['v', 'i', 'g', 'h']
[A]: -1


[Q]: ['b', '245', 'g', '75', '403', '81', 'a', '379', '353', 'e']
[A]:
0, 1, 2, 3, 4, 5, 7, 8, 9