ought to raven
Regular verb: raven - ravened- ravened

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to raven
you ought not to raven
he ought not to raven
we ought not to raven
you ought not to raven
they ought not to raven 	I ought not to ravening
you ought not to ravening
he ought not to ravening
we ought not to ravening
you ought not to ravening
they ought not to ravening	I ought not to have ravened
you ought not to have ravened
he ought not to have ravened
we ought not to have ravened
you ought not to have ravened
they ought not to have ravened	I ought not to have been ravening
you ought not to have been ravening
he ought not to have been ravening
we ought not to have been ravening
you ought not to have been ravening
they ought not to have been ravening	

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

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