English verb conjugation
OUGHT TO SERVICE

Regular verb: service - serviced - serviced

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I oughtn't to service you oughtn't to service he oughtn't to service we oughtn't to service you oughtn't to service they oughtn't to service	I oughtn't to be servicing you oughtn't to be servicing he oughtn't to be servicing we oughtn't to be servicing you oughtn't to be servicing they oughtn't to be servicing
Perfect	V-ing perfect
I oughtn't to have serviced you oughtn't to have serviced he oughtn't to have serviced we oughtn't to have serviced you oughtn't to have serviced they oughtn't to have serviced	I oughtn't to have been servicing you oughtn't to have been servicing he oughtn't to have been servicing we oughtn't to have been servicing you oughtn't to have been servicing they oughtn't to have been servicing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
oughtn't I to service? oughtn't you to service? oughtn't he to service? oughtn't we to service? oughtn't you to service? oughtn't they to service?	oughtn't I to be servicing? oughtn't you to be servicing? oughtn't he to be servicing? oughtn't we to be servicing? oughtn't you to be servicing? oughtn't they to be servicing?
Perfect	V-ing perfect
oughtn't I to have serviced? oughtn't you to have serviced? oughtn't he to have serviced? oughtn't we to have serviced? oughtn't you to have serviced? oughtn't they to have serviced?	oughtn't I to have been servicing? oughtn't you to have been servicing? oughtn't he to have been servicing? oughtn't we to have been servicing? oughtn't you to have been servicing? oughtn't they to have been servicing?