can befog
Regular verb: befog - befoged- befoged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can befog
you can befog
she can befog
we can befog
you can befog
they can befog 	I can be befoging
you can be befoging
she can be befoging
we can be befoging
you can be befoging
they can be befoging	I can have befoged
you can have befoged
she can have befoged
we can have befoged
you can have befoged
they can have befoged	I can have been befoging
you can have been befoging
she can have been befoging
we can have been befoging
you can have been befoging
they can have been befoging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot befog
you cannot befog
she cannot befog
we cannot befog
you cannot befog
they cannot befog 	I cannot be befoging
you cannot be befoging
she cannot be befoging
we cannot be befoging
you cannot be befoging
they cannot be befoging	I cannot have befoged
you cannot have befoged
she cannot have befoged
we cannot have befoged
you cannot have befoged
they cannot have befoged	I cannot have been befoging
you cannot have been befoging
she cannot have been befoging
we cannot have been befoging
you cannot have been befoging
they cannot have been befoging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I befog?
can you befog?
can she befog?
can we befog?
can you befog?
can they befog? 	can I be befoging?
can you be befoging?
can she be befoging?
can we be befoging?
can you be befoging?
can they be befoging? 	can I have befoged?
can you have befoged?
can she have befoged?
can we have befoged?
can you have befoged?
can they have befoged? 	can I have been befoging?
can you have been befoging?
can she have been befoging?
can we have been befoging?
can you have been befoging?
can they have been befoging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not befog?
can you not befog?
can she not befog?
can we not befog?
can you not befog?
can they not befog? 	can I not be befoging?
can you not be befoging?
can she not be befoging?
can we not be befoging?
can you not be befoging?
can they not be befoging? 	can I not have befoged?
can you not have befoged?
can she not have befoged?
can we not have befoged?
can you not have befoged?
can they not have befoged? 	can I not have been befoging?
can you not have been befoging?
can she not have been befoging?
can we not have been befoging?
can you not have been befoging?
can they not have been befoging?