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


[Q]: ['437', '377']
[A]: 3, 4, 7


[Q]: ['293', '473', '79', 'j', '455', '285', 'k', 'd', '379', '249', '73', '229']
[A]:
2, 3, 4, 5, 7, 8, 9