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]: ['361', '47', 'k', '33']
[A]: 1, 3, 4, 6, 7


[Q]: ['s', 't', 'c', '299', 'g', '33', 'o', '485', '345', '295', 'm', '345', 'q', '431', '151']
[A]: 1, 2, 3, 4, 5, 8, 9


[Q]: ['p', '375', '115', '73', 'u', '441', '79', 'd', '275', 't', 'l', 'u', 'w', 'a']
[A]:
1, 2, 3, 4, 5, 7, 9