could befoul
Regular verb: befoul - befouled- befouled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could befoul
you could befoul
he could befoul
we could befoul
you could befoul
they could befoul 	I could be befouling
you could be befouling
he could be befouling
we could be befouling
you could be befouling
they could be befouling	I could have befouled
you could have befouled
he could have befouled
we could have befouled
you could have befouled
they could have befouled	I could have been befouling
you could have been befouling
he could have been befouling
we could have been befouling
you could have been befouling
they could have been befouling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not befoul
you could not befoul
he could not befoul
we could not befoul
you could not befoul
they could not befoul 	I could not be befouling
you could not be befouling
he could not be befouling
we could not be befouling
you could not be befouling
they could not be befouling	I could not have befouled
you could not have befouled
he could not have befouled
we could not have befouled
you could not have befouled
they could not have befouled	I could not have been befouling
you could not have been befouling
he could not have been befouling
we could not have been befouling
you could not have been befouling
they could not have been befouling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I befoul?
could you befoul?
could he befoul?
could we befoul?
could you befoul?
could they befoul? 	could I be befouling?
could you be befouling?
could he be befouling?
could we be befouling?
could you be befouling?
could they be befouling? 	could I have befouled?
could you have befouled?
could he have befouled?
could we have befouled?
could you have befouled?
could they have befouled? 	could I have been befouling?
could you have been befouling?
could he have been befouling?
could we have been befouling?
could you have been befouling?
could they have been befouling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not befoul?
could you not befoul?
could he not befoul?
could we not befoul?
could you not befoul?
could they not befoul? 	could I not be befouling?
could you not be befouling?
could he not be befouling?
could we not be befouling?
could you not be befouling?
could they not be befouling? 	could I not have befouled?
could you not have befouled?
could he not have befouled?
could we not have befouled?
could you not have befouled?
could they not have befouled? 	could I not have been befouling?
could you not have been befouling?
could he not have been befouling?
could we not have been befouling?
could you not have been befouling?
could they not have been befouling?