can furrow
Regular verb: furrow - furrowed- furrowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can furrow
you can furrow
he can furrow
we can furrow
you can furrow
they can furrow 	I can be furrowing
you can be furrowing
he can be furrowing
we can be furrowing
you can be furrowing
they can be furrowing	I can have furrowed
you can have furrowed
he can have furrowed
we can have furrowed
you can have furrowed
they can have furrowed	I can have been furrowing
you can have been furrowing
he can have been furrowing
we can have been furrowing
you can have been furrowing
they can have been furrowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot furrow
you cannot furrow
he cannot furrow
we cannot furrow
you cannot furrow
they cannot furrow 	I cannot be furrowing
you cannot be furrowing
he cannot be furrowing
we cannot be furrowing
you cannot be furrowing
they cannot be furrowing	I cannot have furrowed
you cannot have furrowed
he cannot have furrowed
we cannot have furrowed
you cannot have furrowed
they cannot have furrowed	I cannot have been furrowing
you cannot have been furrowing
he cannot have been furrowing
we cannot have been furrowing
you cannot have been furrowing
they cannot have been furrowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I furrow?
can you furrow?
can he furrow?
can we furrow?
can you furrow?
can they furrow? 	can I be furrowing?
can you be furrowing?
can he be furrowing?
can we be furrowing?
can you be furrowing?
can they be furrowing? 	can I have furrowed?
can you have furrowed?
can he have furrowed?
can we have furrowed?
can you have furrowed?
can they have furrowed? 	can I have been furrowing?
can you have been furrowing?
can he have been furrowing?
can we have been furrowing?
can you have been furrowing?
can they have been furrowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not furrow?
can you not furrow?
can he not furrow?
can we not furrow?
can you not furrow?
can they not furrow? 	can I not be furrowing?
can you not be furrowing?
can he not be furrowing?
can we not be furrowing?
can you not be furrowing?
can they not be furrowing? 	can I not have furrowed?
can you not have furrowed?
can he not have furrowed?
can we not have furrowed?
can you not have furrowed?
can they not have furrowed? 	can I not have been furrowing?
can you not have been furrowing?
can he not have been furrowing?
can we not have been furrowing?
can you not have been furrowing?
can they not have been furrowing?