English verb conjugation
CAN RAVEN

Regular verb: raven - ravened - ravened

Affirmation

Simple form	V-ing form
I can raven you can raven he can raven we can raven you can raven they can raven	I can be ravening you can be ravening he can be ravening we can be ravening you can be ravening they can be ravening
Perfect	V-ing perfect
I can have ravened you can have ravened he can have ravened we can have ravened you can have ravened they can have ravened	I can have been ravening you can have been ravening he can have been ravening we can have been ravening you can have been ravening they can have been ravening

Negation

Simple form	V-ing form
I cannot raven you cannot raven he cannot raven we cannot raven you cannot raven they cannot raven	I cannot be ravening you cannot be ravening he cannot be ravening we cannot be ravening you cannot be ravening they cannot be ravening
Perfect	V-ing perfect
I cannot have ravened you cannot have ravened he cannot have ravened we cannot have ravened you cannot have ravened they cannot have ravened	I cannot have been ravening you cannot have been ravening he cannot have been ravening we cannot have been ravening you cannot have been ravening they cannot have been ravening

Interrogative form

Simple form	V-ing form
can I raven? can you raven? can he raven? can we raven? can you raven? can they raven?	can I be ravening? can you be ravening? can he be ravening? can we be ravening? can you be ravening? can they be ravening?
Perfect	V-ing perfect
can I have ravened? can you have ravened? can he have ravened? can we have ravened? can you have ravened? can they have ravened?	can I have been ravening? can you have been ravening? can he have been ravening? can we have been ravening? can you have been ravening? can they have been ravening?

Interro-negative form

Simple form	V-ing form
can I not raven? can you not raven? can he not raven? can we not raven? can you not raven? can they not raven?	can I not be ravening? can you not be ravening? can he not be ravening? can we not be ravening? can you not be ravening? can they not be ravening?
Perfect	V-ing perfect
can I not have ravened? can you not have ravened? can he not have ravened? can we not have ravened? can you not have ravened? can they not have ravened?	can I not have been ravening? can you not have been ravening? can he not have been ravening? can we not have been ravening? can you not have been ravening? can they not have been ravening?