English verb conjugation
CAN FOG

Regular verb: fog - fogged - fogged

Affirmation

Simple form	V-ing form
I can fog you can fog he can fog we can fog you can fog they can fog	I can be fogging you can be fogging he can be fogging we can be fogging you can be fogging they can be fogging
Perfect	V-ing perfect
I can have fogged you can have fogged he can have fogged we can have fogged you can have fogged they can have fogged	I can have been fogging you can have been fogging he can have been fogging we can have been fogging you can have been fogging they can have been fogging

Negation

Simple form	V-ing form
I cannot fog you cannot fog he cannot fog we cannot fog you cannot fog they cannot fog	I cannot be fogging you cannot be fogging he cannot be fogging we cannot be fogging you cannot be fogging they cannot be fogging
Perfect	V-ing perfect
I cannot have fogged you cannot have fogged he cannot have fogged we cannot have fogged you cannot have fogged they cannot have fogged	I cannot have been fogging you cannot have been fogging he cannot have been fogging we cannot have been fogging you cannot have been fogging they cannot have been fogging

Interrogative form

Simple form	V-ing form
can I fog? can you fog? can he fog? can we fog? can you fog? can they fog?	can I be fogging? can you be fogging? can he be fogging? can we be fogging? can you be fogging? can they be fogging?
Perfect	V-ing perfect
can I have fogged? can you have fogged? can he have fogged? can we have fogged? can you have fogged? can they have fogged?	can I have been fogging? can you have been fogging? can he have been fogging? can we have been fogging? can you have been fogging? can they have been fogging?

Interro-negative form

Simple form	V-ing form
can I not fog? can you not fog? can he not fog? can we not fog? can you not fog? can they not fog?	can I not be fogging? can you not be fogging? can he not be fogging? can we not be fogging? can you not be fogging? can they not be fogging?
Perfect	V-ing perfect
can I not have fogged? can you not have fogged? can he not have fogged? can we not have fogged? can you not have fogged? can they not have fogged?	can I not have been fogging? can you not have been fogging? can he not have been fogging? can we not have been fogging? can you not have been fogging? can they not have been fogging?