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]: ['119', '329', 'w']
[A]: 1, 2, 3, 9


[Q]: ['b', 'm', '471']
[A]: 1, 4, 7


[Q]: ['421', 's', 'c', '23', 'o', 's', '185', '183', '215', 'z', 'v', 'e', 'q', 'x', '371']
[A]:
1, 2, 3, 4, 5, 7, 8