English verb conjugation
CAN PROPOSE

Regular verb: propose - proposed - proposed

Affirmation

Simple form	V-ing form
I can propose you can propose he can propose we can propose you can propose they can propose	I can be proposing you can be proposing he can be proposing we can be proposing you can be proposing they can be proposing
Perfect	V-ing perfect
I can have proposed you can have proposed he can have proposed we can have proposed you can have proposed they can have proposed	I can have been proposing you can have been proposing he can have been proposing we can have been proposing you can have been proposing they can have been proposing

Negation

Simple form	V-ing form
I cannot propose you cannot propose he cannot propose we cannot propose you cannot propose they cannot propose	I cannot be proposing you cannot be proposing he cannot be proposing we cannot be proposing you cannot be proposing they cannot be proposing
Perfect	V-ing perfect
I cannot have proposed you cannot have proposed he cannot have proposed we cannot have proposed you cannot have proposed they cannot have proposed	I cannot have been proposing you cannot have been proposing he cannot have been proposing we cannot have been proposing you cannot have been proposing they cannot have been proposing

Interrogative form

Simple form	V-ing form
can I propose? can you propose? can he propose? can we propose? can you propose? can they propose?	can I be proposing? can you be proposing? can he be proposing? can we be proposing? can you be proposing? can they be proposing?
Perfect	V-ing perfect
can I have proposed? can you have proposed? can he have proposed? can we have proposed? can you have proposed? can they have proposed?	can I have been proposing? can you have been proposing? can he have been proposing? can we have been proposing? can you have been proposing? can they have been proposing?

Interro-negative form

Simple form	V-ing form
can I not propose? can you not propose? can he not propose? can we not propose? can you not propose? can they not propose?	can I not be proposing? can you not be proposing? can he not be proposing? can we not be proposing? can you not be proposing? can they not be proposing?
Perfect	V-ing perfect
can I not have proposed? can you not have proposed? can he not have proposed? can we not have proposed? can you not have proposed? can they not have proposed?	can I not have been proposing? can you not have been proposing? can he not have been proposing? can we not have been proposing? can you not have been proposing? can they not have been proposing?