English verb conjugation
CAN SUPPOSE

Regular verb: suppose - supposed - supposed

Affirmation

Simple form	V-ing form
I can suppose you can suppose he can suppose we can suppose you can suppose they can suppose	I can be supposing you can be supposing he can be supposing we can be supposing you can be supposing they can be supposing
Perfect	V-ing perfect
I can have supposed you can have supposed he can have supposed we can have supposed you can have supposed they can have supposed	I can have been supposing you can have been supposing he can have been supposing we can have been supposing you can have been supposing they can have been supposing

Negation

Simple form	V-ing form
I cannot suppose you cannot suppose he cannot suppose we cannot suppose you cannot suppose they cannot suppose	I cannot be supposing you cannot be supposing he cannot be supposing we cannot be supposing you cannot be supposing they cannot be supposing
Perfect	V-ing perfect
I cannot have supposed you cannot have supposed he cannot have supposed we cannot have supposed you cannot have supposed they cannot have supposed	I cannot have been supposing you cannot have been supposing he cannot have been supposing we cannot have been supposing you cannot have been supposing they cannot have been supposing

Interrogative form

Simple form	V-ing form
can I suppose? can you suppose? can he suppose? can we suppose? can you suppose? can they suppose?	can I be supposing? can you be supposing? can he be supposing? can we be supposing? can you be supposing? can they be supposing?
Perfect	V-ing perfect
can I have supposed? can you have supposed? can he have supposed? can we have supposed? can you have supposed? can they have supposed?	can I have been supposing? can you have been supposing? can he have been supposing? can we have been supposing? can you have been supposing? can they have been supposing?

Interro-negative form

Simple form	V-ing form
can I not suppose? can you not suppose? can he not suppose? can we not suppose? can you not suppose? can they not suppose?	can I not be supposing? can you not be supposing? can he not be supposing? can we not be supposing? can you not be supposing? can they not be supposing?
Perfect	V-ing perfect
can I not have supposed? can you not have supposed? can he not have supposed? can we not have supposed? can you not have supposed? can they not have supposed?	can I not have been supposing? can you not have been supposing? can he not have been supposing? can we not have been supposing? can you not have been supposing? can they not have been supposing?