ought to prebook
Regular verb: prebook - prebooked- prebooked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prebook
you ought to prebook
he ought to prebook
we ought to prebook
you ought to prebook
they ought to prebook 	I ought to be prebooking
you ought to be prebooking
he ought to be prebooking
we ought to be prebooking
you ought to be prebooking
they ought to be prebooking	I ought to have prebooked
you ought to have prebooked
he ought to have prebooked
we ought to have prebooked
you ought to have prebooked
they ought to have prebooked	I ought to have been prebooking
you ought to have been prebooking
he ought to have been prebooking
we ought to have been prebooking
you ought to have been prebooking
they ought to have been prebooking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to prebook
you ought not to prebook
he ought not to prebook
we ought not to prebook
you ought not to prebook
they ought not to prebook 	I ought not to prebooking
you ought not to prebooking
he ought not to prebooking
we ought not to prebooking
you ought not to prebooking
they ought not to prebooking	I ought not to have prebooked
you ought not to have prebooked
he ought not to have prebooked
we ought not to have prebooked
you ought not to have prebooked
they ought not to have prebooked	I ought not to have been prebooking
you ought not to have been prebooking
he ought not to have been prebooking
we ought not to have been prebooking
you ought not to have been prebooking
they ought not to have been prebooking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I prebook?
ought to you prebook?
ought to he prebook?
ought to we prebook?
ought to you prebook?
ought to they prebook? 	ought to I be prebooking?
ought to you be prebooking?
ought to he be prebooking?
ought to we be prebooking?
ought to you be prebooking?
ought to they be prebooking? 	ought to I have prebooked?
ought to you have prebooked?
ought to he have prebooked?
ought to we have prebooked?
ought to you have prebooked?
ought to they have prebooked? 	ought to I have been prebooking?
ought to you have been prebooking?
ought to he have been prebooking?
ought to we have been prebooking?
ought to you have been prebooking?
ought to they have been prebooking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to prebook?
ought you not to prebook?
ought he not to prebook?
ought we not to prebook?
ought you not to prebook?
ought they not to prebook? 	ought I not to be prebooking?
ought you not to be prebooking?
ought he not to be prebooking?
ought we not to be prebooking?
ought you not to be prebooking?
ought they not to be prebooking? 	ought I not to have prebooked?
ought you not to have prebooked?
ought he not to have prebooked?
ought we not to have prebooked?
ought you not to have prebooked?
ought they not to have prebooked? 	ought I not to have been prebooking?
ought you not to have been prebooking?
ought he not to have been prebooking?
ought we not to have been prebooking?
ought you not to have been prebooking?
ought they not to have been prebooking?