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]: ['233', '339', '319']
[A]: 1, 2, 3, 9


[Q]: ['o', 'f', 'm', 'w', 'w', 'y', 'b']
[A]: -1


[Q]: ['479', '339', '421', 'q', 'f', 'i', 'e', '81', 'y']
[A]:
1, 2, 3, 4, 7, 8, 9