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]: ['499', '493', 'i', '87']
[A]: 3, 4, 7, 8, 9


[Q]: ['85', '101', 'j', 'g', 'o', 'f', 'w', 'o', 'm', '45', 'e', 'z']
[A]: 0, 1, 4, 5, 8


[Q]: ['175', '147', 'f', 'x']
[A]:
1, 4, 5, 7