I can complement you can complement she can complement we can complement you can complement they can complement
V-ing form
I can be complementing you can be complementing she can be complementing we can be complementing you can be complementing they can be complementing
Perfect
I can have complemented you can have complemented she can have complemented we can have complemented you can have complemented they can have complemented
V-ing perfect
I can have been complementing you can have been complementing she can have been complementing we can have been complementing you can have been complementing they can have been complementing
Negation
Simple form
I cannot complement you cannot complement she cannot complement we cannot complement you cannot complement they cannot complement
V-ing form
I cannot be complementing you cannot be complementing she cannot be complementing we cannot be complementing you cannot be complementing they cannot be complementing
Perfect
I cannot have complemented you cannot have complemented she cannot have complemented we cannot have complemented you cannot have complemented they cannot have complemented
V-ing perfect
I cannot have been complementing you cannot have been complementing she cannot have been complementing we cannot have been complementing you cannot have been complementing they cannot have been complementing
Interrogative form
Simple form
can I complement? can you complement? can she complement? can we complement? can you complement? can they complement?
V-ing form
can I be complementing? can you be complementing? can she be complementing? can we be complementing? can you be complementing? can they be complementing?
Perfect
can I have complemented? can you have complemented? can she have complemented? can we have complemented? can you have complemented? can they have complemented?
V-ing perfect
can I have been complementing? can you have been complementing? can she have been complementing? can we have been complementing? can you have been complementing? can they have been complementing?
Interro-negative form
Simple form
can I not complement? can you not complement? can she not complement? can we not complement? can you not complement? can they not complement?
V-ing form
can I not be complementing? can you not be complementing? can she not be complementing? can we not be complementing? can you not be complementing? can they not be complementing?
Perfect
can I not have complemented? can you not have complemented? can she not have complemented? can we not have complemented? can you not have complemented? can they not have complemented?
V-ing perfect
can I not have been complementing? can you not have been complementing? can she not have been complementing? can we not have been complementing? can you not have been complementing? can they not have been complementing?