English verb conjugation
CAN NAG

Regular verb: nag - nagged - nagged

Affirmation

Simple form	V-ing form
I can nag you can nag he can nag we can nag you can nag they can nag	I can be nagging you can be nagging he can be nagging we can be nagging you can be nagging they can be nagging
Perfect	V-ing perfect
I can have nagged you can have nagged he can have nagged we can have nagged you can have nagged they can have nagged	I can have been nagging you can have been nagging he can have been nagging we can have been nagging you can have been nagging they can have been nagging

Negation

Simple form	V-ing form
I cannot nag you cannot nag he cannot nag we cannot nag you cannot nag they cannot nag	I cannot be nagging you cannot be nagging he cannot be nagging we cannot be nagging you cannot be nagging they cannot be nagging
Perfect	V-ing perfect
I cannot have nagged you cannot have nagged he cannot have nagged we cannot have nagged you cannot have nagged they cannot have nagged	I cannot have been nagging you cannot have been nagging he cannot have been nagging we cannot have been nagging you cannot have been nagging they cannot have been nagging

Interrogative form

Simple form	V-ing form
can I nag? can you nag? can he nag? can we nag? can you nag? can they nag?	can I be nagging? can you be nagging? can he be nagging? can we be nagging? can you be nagging? can they be nagging?
Perfect	V-ing perfect
can I have nagged? can you have nagged? can he have nagged? can we have nagged? can you have nagged? can they have nagged?	can I have been nagging? can you have been nagging? can he have been nagging? can we have been nagging? can you have been nagging? can they have been nagging?

Interro-negative form

Simple form	V-ing form
can I not nag? can you not nag? can he not nag? can we not nag? can you not nag? can they not nag?	can I not be nagging? can you not be nagging? can he not be nagging? can we not be nagging? can you not be nagging? can they not be nagging?
Perfect	V-ing perfect
can I not have nagged? can you not have nagged? can he not have nagged? can we not have nagged? can you not have nagged? can they not have nagged?	can I not have been nagging? can you not have been nagging? can he not have been nagging? can we not have been nagging? can you not have been nagging? can they not have been nagging?