can forefend
Regular verb: forefend - forefended- forefended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can forefend
you can forefend
she can forefend
we can forefend
you can forefend
they can forefend 	I can be forefending
you can be forefending
she can be forefending
we can be forefending
you can be forefending
they can be forefending	I can have forefended
you can have forefended
she can have forefended
we can have forefended
you can have forefended
they can have forefended	I can have been forefending
you can have been forefending
she can have been forefending
we can have been forefending
you can have been forefending
they can have been forefending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot forefend
you cannot forefend
she cannot forefend
we cannot forefend
you cannot forefend
they cannot forefend 	I cannot be forefending
you cannot be forefending
she cannot be forefending
we cannot be forefending
you cannot be forefending
they cannot be forefending	I cannot have forefended
you cannot have forefended
she cannot have forefended
we cannot have forefended
you cannot have forefended
they cannot have forefended	I cannot have been forefending
you cannot have been forefending
she cannot have been forefending
we cannot have been forefending
you cannot have been forefending
they cannot have been forefending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I forefend?
can you forefend?
can she forefend?
can we forefend?
can you forefend?
can they forefend? 	can I be forefending?
can you be forefending?
can she be forefending?
can we be forefending?
can you be forefending?
can they be forefending? 	can I have forefended?
can you have forefended?
can she have forefended?
can we have forefended?
can you have forefended?
can they have forefended? 	can I have been forefending?
can you have been forefending?
can she have been forefending?
can we have been forefending?
can you have been forefending?
can they have been forefending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not forefend?
can you not forefend?
can she not forefend?
can we not forefend?
can you not forefend?
can they not forefend? 	can I not be forefending?
can you not be forefending?
can she not be forefending?
can we not be forefending?
can you not be forefending?
can they not be forefending? 	can I not have forefended?
can you not have forefended?
can she not have forefended?
can we not have forefended?
can you not have forefended?
can they not have forefended? 	can I not have been forefending?
can you not have been forefending?
can she not have been forefending?
can we not have been forefending?
can you not have been forefending?
can they not have been forefending?