could necessitate
Regular verb: necessitate - necessitated- necessitated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could necessitate
you could necessitate
he could necessitate
we could necessitate
you could necessitate
they could necessitate 	I could be necessitating
you could be necessitating
he could be necessitating
we could be necessitating
you could be necessitating
they could be necessitating	I could have necessitated
you could have necessitated
he could have necessitated
we could have necessitated
you could have necessitated
they could have necessitated	I could have been necessitating
you could have been necessitating
he could have been necessitating
we could have been necessitating
you could have been necessitating
they could have been necessitating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not necessitate
you could not necessitate
he could not necessitate
we could not necessitate
you could not necessitate
they could not necessitate 	I could not be necessitating
you could not be necessitating
he could not be necessitating
we could not be necessitating
you could not be necessitating
they could not be necessitating	I could not have necessitated
you could not have necessitated
he could not have necessitated
we could not have necessitated
you could not have necessitated
they could not have necessitated	I could not have been necessitating
you could not have been necessitating
he could not have been necessitating
we could not have been necessitating
you could not have been necessitating
they could not have been necessitating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I necessitate?
could you necessitate?
could he necessitate?
could we necessitate?
could you necessitate?
could they necessitate? 	could I be necessitating?
could you be necessitating?
could he be necessitating?
could we be necessitating?
could you be necessitating?
could they be necessitating? 	could I have necessitated?
could you have necessitated?
could he have necessitated?
could we have necessitated?
could you have necessitated?
could they have necessitated? 	could I have been necessitating?
could you have been necessitating?
could he have been necessitating?
could we have been necessitating?
could you have been necessitating?
could they have been necessitating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not necessitate?
could you not necessitate?
could he not necessitate?
could we not necessitate?
could you not necessitate?
could they not necessitate? 	could I not be necessitating?
could you not be necessitating?
could he not be necessitating?
could we not be necessitating?
could you not be necessitating?
could they not be necessitating? 	could I not have necessitated?
could you not have necessitated?
could he not have necessitated?
could we not have necessitated?
could you not have necessitated?
could they not have necessitated? 	could I not have been necessitating?
could you not have been necessitating?
could he not have been necessitating?
could we not have been necessitating?
could you not have been necessitating?
could they not have been necessitating?