I can screen-test you can screen-test he can screen-test we can screen-test you can screen-test they can screen-test
V-ing form
I can be screen-testing you can be screen-testing he can be screen-testing we can be screen-testing you can be screen-testing they can be screen-testing
Perfect
I can have screen-tested you can have screen-tested he can have screen-tested we can have screen-tested you can have screen-tested they can have screen-tested
V-ing perfect
I can have been screen-testing you can have been screen-testing he can have been screen-testing we can have been screen-testing you can have been screen-testing they can have been screen-testing
Negation
Simple form
I cannot screen-test you cannot screen-test he cannot screen-test we cannot screen-test you cannot screen-test they cannot screen-test
V-ing form
I cannot be screen-testing you cannot be screen-testing he cannot be screen-testing we cannot be screen-testing you cannot be screen-testing they cannot be screen-testing
Perfect
I cannot have screen-tested you cannot have screen-tested he cannot have screen-tested we cannot have screen-tested you cannot have screen-tested they cannot have screen-tested
V-ing perfect
I cannot have been screen-testing you cannot have been screen-testing he cannot have been screen-testing we cannot have been screen-testing you cannot have been screen-testing they cannot have been screen-testing
Interrogative form
Simple form
can I screen-test? can you screen-test? can he screen-test? can we screen-test? can you screen-test? can they screen-test?
V-ing form
can I be screen-testing? can you be screen-testing? can he be screen-testing? can we be screen-testing? can you be screen-testing? can they be screen-testing?
Perfect
can I have screen-tested? can you have screen-tested? can he have screen-tested? can we have screen-tested? can you have screen-tested? can they have screen-tested?
V-ing perfect
can I have been screen-testing? can you have been screen-testing? can he have been screen-testing? can we have been screen-testing? can you have been screen-testing? can they have been screen-testing?
Interro-negative form
Simple form
can I not screen-test? can you not screen-test? can he not screen-test? can we not screen-test? can you not screen-test? can they not screen-test?
V-ing form
can I not be screen-testing? can you not be screen-testing? can he not be screen-testing? can we not be screen-testing? can you not be screen-testing? can they not be screen-testing?
Perfect
can I not have screen-tested? can you not have screen-tested? can he not have screen-tested? can we not have screen-tested? can you not have screen-tested? can they not have screen-tested?
V-ing perfect
can I not have been screen-testing? can you not have been screen-testing? can he not have been screen-testing? can we not have been screen-testing? can you not have been screen-testing? can they not have been screen-testing?