could forefend
Regular verb: forefend - forefended- forefended

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't forefend
you couldn't forefend
he couldn't forefend
we couldn't forefend
you couldn't forefend
they couldn't forefend 	I couldn't be forefending
you couldn't be forefending
he couldn't be forefending
we couldn't be forefending
you couldn't be forefending
they couldn't be forefending	I couldn't have forefended
you couldn't have forefended
he couldn't have forefended
we couldn't have forefended
you couldn't have forefended
they couldn't have forefended	I couldn't have been forefending
you couldn't have been forefending
he couldn't have been forefending
we couldn't have been forefending
you couldn't have been forefending
they couldn't have been forefending	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I forefend?
couldn't you forefend?
couldn't he forefend?
couldn't we forefend?
couldn't you forefend?
couldn't they forefend? 	couldn't I be forefending?
couldn't you be forefending?
couldn't he be forefending?
couldn't we be forefending?
couldn't you be forefending?
couldn't they be forefending? 	couldn't I have forefended?
couldn't you have forefended?
couldn't he have forefended?
couldn't we have forefended?
couldn't you have forefended?
couldn't they have forefended? 	couldn't I have been forefending?
couldn't you have been forefending?
couldn't he have been forefending?
couldn't we have been forefending?
couldn't you have been forefending?
couldn't they have been forefending?