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