can raven
Regular verb: raven - ravened- ravened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I can't raven
you can't raven
he can't raven
we can't raven
you can't raven
they can't raven 	I can't be ravening
you can't be ravening
he can't be ravening
we can't be ravening
you can't be ravening
they can't be ravening	I can't have ravened
you can't have ravened
he can't have ravened
we can't have ravened
you can't have ravened
they can't have ravened	I can't have been ravening
you can't have been ravening
he can't have been ravening
we can't have been ravening
you can't have been ravening
they can't have been ravening	

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