ought to service
Regular verb: service - serviced- serviced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to service
you ought to service
he ought to service
we ought to service
you ought to service
they ought to service 	I ought to be servicing
you ought to be servicing
he ought to be servicing
we ought to be servicing
you ought to be servicing
they ought to be servicing	I ought to have serviced
you ought to have serviced
he ought to have serviced
we ought to have serviced
you ought to have serviced
they ought to have serviced	I ought to have been servicing
you ought to have been servicing
he ought to have been servicing
we ought to have been servicing
you ought to have been servicing
they ought to have been servicing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to service
you ought not to service
he ought not to service
we ought not to service
you ought not to service
they ought not to service 	I ought not to servicing
you ought not to servicing
he ought not to servicing
we ought not to servicing
you ought not to servicing
they ought not to servicing	I ought not to have serviced
you ought not to have serviced
he ought not to have serviced
we ought not to have serviced
you ought not to have serviced
they ought not to have serviced	I ought not to have been servicing
you ought not to have been servicing
he ought not to have been servicing
we ought not to have been servicing
you ought not to have been servicing
they ought not to have been servicing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I service?
ought to you service?
ought to he service?
ought to we service?
ought to you service?
ought to they service? 	ought to I be servicing?
ought to you be servicing?
ought to he be servicing?
ought to we be servicing?
ought to you be servicing?
ought to they be servicing? 	ought to I have serviced?
ought to you have serviced?
ought to he have serviced?
ought to we have serviced?
ought to you have serviced?
ought to they have serviced? 	ought to I have been servicing?
ought to you have been servicing?
ought to he have been servicing?
ought to we have been servicing?
ought to you have been servicing?
ought to they have been servicing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to service?
ought you not to service?
ought he not to service?
ought we not to service?
ought you not to service?
ought they not to service? 	ought I not to be servicing?
ought you not to be servicing?
ought he not to be servicing?
ought we not to be servicing?
ought you not to be servicing?
ought they not to be servicing? 	ought I not to have serviced?
ought you not to have serviced?
ought he not to have serviced?
ought we not to have serviced?
ought you not to have serviced?
ought they not to have serviced? 	ought I not to have been servicing?
ought you not to have been servicing?
ought he not to have been servicing?
ought we not to have been servicing?
ought you not to have been servicing?
ought they not to have been servicing?