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]: ['k', '217']
[A]: 1, 2, 7


[Q]: ['o', 'f', 'x', '239']
[A]: 2, 3, 9


[Q]: ['u', '237', 'a', '217', 'w']
[A]:
1, 2, 3, 7