I can necessitate you can necessitate he can necessitate we can necessitate you can necessitate they can necessitate
V-ing form
I can be necessitating you can be necessitating he can be necessitating we can be necessitating you can be necessitating they can be necessitating
Perfect
I can have necessitated you can have necessitated he can have necessitated we can have necessitated you can have necessitated they can have necessitated
V-ing perfect
I can have been necessitating you can have been necessitating he can have been necessitating we can have been necessitating you can have been necessitating they can have been necessitating
Negation
Simple form
I can't necessitate you can't necessitate he can't necessitate we can't necessitate you can't necessitate they can't necessitate
V-ing form
I can't be necessitating you can't be necessitating he can't be necessitating we can't be necessitating you can't be necessitating they can't be necessitating
Perfect
I can't have necessitated you can't have necessitated he can't have necessitated we can't have necessitated you can't have necessitated they can't have necessitated
V-ing perfect
I can't have been necessitating you can't have been necessitating he can't have been necessitating we can't have been necessitating you can't have been necessitating they can't have been necessitating
Interrogative form
Simple form
can I necessitate? can you necessitate? can he necessitate? can we necessitate? can you necessitate? can they necessitate?
V-ing form
can I be necessitating? can you be necessitating? can he be necessitating? can we be necessitating? can you be necessitating? can they be necessitating?
Perfect
can I have necessitated? can you have necessitated? can he have necessitated? can we have necessitated? can you have necessitated? can they have necessitated?
V-ing perfect
can I have been necessitating? can you have been necessitating? can he have been necessitating? can we have been necessitating? can you have been necessitating? can they have been necessitating?
Interro-negative form
Simple form
can't I necessitate? can't you necessitate? can't he necessitate? can't we necessitate? can't you necessitate? can't they necessitate?
V-ing form
can't I be necessitating? can't you be necessitating? can't he be necessitating? can't we be necessitating? can't you be necessitating? can't they be necessitating?
Perfect
can't I have necessitated? can't you have necessitated? can't he have necessitated? can't we have necessitated? can't you have necessitated? can't they have necessitated?
V-ing perfect
can't I have been necessitating? can't you have been necessitating? can't he have been necessitating? can't we have been necessitating? can't you have been necessitating? can't they have been necessitating?