I can complement you can complement he can complement we can complement you can complement they can complement
V-ing form
I can be complementing you can be complementing he can be complementing we can be complementing you can be complementing they can be complementing
Perfect
I can have complemented you can have complemented he 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 he can have been complementing we can have been complementing you can have been complementing they can have been complementing
Negation
Simple form
I can't complement you can't complement he can't complement we can't complement you can't complement they can't complement
V-ing form
I can't be complementing you can't be complementing he can't be complementing we can't be complementing you can't be complementing they can't be complementing
Perfect
I can't have complemented you can't have complemented he can't have complemented we can't have complemented you can't have complemented they can't have complemented
V-ing perfect
I can't have been complementing you can't have been complementing he can't have been complementing we can't have been complementing you can't have been complementing they can't have been complementing
Interrogative form
Simple form
can I complement? can you complement? can he complement? can we complement? can you complement? can they complement?
V-ing form
can I be complementing? can you be complementing? can he be complementing? can we be complementing? can you be complementing? can they be complementing?
Perfect
can I have complemented? can you have complemented? can he 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 he have been complementing? can we have been complementing? can you have been complementing? can they have been complementing?
Interro-negative form
Simple form
can't I complement? can't you complement? can't he complement? can't we complement? can't you complement? can't they complement?
V-ing form
can't I be complementing? can't you be complementing? can't he be complementing? can't we be complementing? can't you be complementing? can't they be complementing?
Perfect
can't I have complemented? can't you have complemented? can't he have complemented? can't we have complemented? can't you have complemented? can't they have complemented?
V-ing perfect
can't I have been complementing? can't you have been complementing? can't he have been complementing? can't we have been complementing? can't you have been complementing? can't they have been complementing?