English verb conjugation
CAN GREATEN

Regular verb: greaten - greatened - greatened

Affirmation

Simple form	V-ing form
I can greaten you can greaten he can greaten we can greaten you can greaten they can greaten	I can be greatening you can be greatening he can be greatening we can be greatening you can be greatening they can be greatening
Perfect	V-ing perfect
I can have greatened you can have greatened he can have greatened we can have greatened you can have greatened they can have greatened	I can have been greatening you can have been greatening he can have been greatening we can have been greatening you can have been greatening they can have been greatening

Negation

Simple form	V-ing form
I can't greaten you can't greaten he can't greaten we can't greaten you can't greaten they can't greaten	I can't be greatening you can't be greatening he can't be greatening we can't be greatening you can't be greatening they can't be greatening
Perfect	V-ing perfect
I can't have greatened you can't have greatened he can't have greatened we can't have greatened you can't have greatened they can't have greatened	I can't have been greatening you can't have been greatening he can't have been greatening we can't have been greatening you can't have been greatening they can't have been greatening

Interrogative form

Simple form	V-ing form
can I greaten? can you greaten? can he greaten? can we greaten? can you greaten? can they greaten?	can I be greatening? can you be greatening? can he be greatening? can we be greatening? can you be greatening? can they be greatening?
Perfect	V-ing perfect
can I have greatened? can you have greatened? can he have greatened? can we have greatened? can you have greatened? can they have greatened?	can I have been greatening? can you have been greatening? can he have been greatening? can we have been greatening? can you have been greatening? can they have been greatening?

Interro-negative form

Simple form	V-ing form
can't I greaten? can't you greaten? can't he greaten? can't we greaten? can't you greaten? can't they greaten?	can't I be greatening? can't you be greatening? can't he be greatening? can't we be greatening? can't you be greatening? can't they be greatening?
Perfect	V-ing perfect
can't I have greatened? can't you have greatened? can't he have greatened? can't we have greatened? can't you have greatened? can't they have greatened?	can't I have been greatening? can't you have been greatening? can't he have been greatening? can't we have been greatening? can't you have been greatening? can't they have been greatening?