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]: ['p', 'p', '91']
[A]: 1, 9


[Q]: ['d', '71', '65', '177', 'k']
[A]: 1, 5, 6, 7


[Q]: ['31', 's', 'w', 'h']
[A]:
1, 3