I can schematize you can schematize he can schematize we can schematize you can schematize they can schematize
V-ing form
I can be schematizing you can be schematizing he can be schematizing we can be schematizing you can be schematizing they can be schematizing
Perfect
I can have schematized you can have schematized he can have schematized we can have schematized you can have schematized they can have schematized
V-ing perfect
I can have been schematizing you can have been schematizing he can have been schematizing we can have been schematizing you can have been schematizing they can have been schematizing
Negation
Simple form
I cannot schematize you cannot schematize he cannot schematize we cannot schematize you cannot schematize they cannot schematize
V-ing form
I cannot be schematizing you cannot be schematizing he cannot be schematizing we cannot be schematizing you cannot be schematizing they cannot be schematizing
Perfect
I cannot have schematized you cannot have schematized he cannot have schematized we cannot have schematized you cannot have schematized they cannot have schematized
V-ing perfect
I cannot have been schematizing you cannot have been schematizing he cannot have been schematizing we cannot have been schematizing you cannot have been schematizing they cannot have been schematizing
Interrogative form
Simple form
can I schematize? can you schematize? can he schematize? can we schematize? can you schematize? can they schematize?
V-ing form
can I be schematizing? can you be schematizing? can he be schematizing? can we be schematizing? can you be schematizing? can they be schematizing?
Perfect
can I have schematized? can you have schematized? can he have schematized? can we have schematized? can you have schematized? can they have schematized?
V-ing perfect
can I have been schematizing? can you have been schematizing? can he have been schematizing? can we have been schematizing? can you have been schematizing? can they have been schematizing?
Interro-negative form
Simple form
can I not schematize? can you not schematize? can he not schematize? can we not schematize? can you not schematize? can they not schematize?
V-ing form
can I not be schematizing? can you not be schematizing? can he not be schematizing? can we not be schematizing? can you not be schematizing? can they not be schematizing?
Perfect
can I not have schematized? can you not have schematized? can he not have schematized? can we not have schematized? can you not have schematized? can they not have schematized?
V-ing perfect
can I not have been schematizing? can you not have been schematizing? can he not have been schematizing? can we not have been schematizing? can you not have been schematizing? can they not have been schematizing?