English verb conjugation
OUGHT TO PLUMB

Regular verb: plumb - plumbed - plumbed

Affirmation

Simple form	V-ing form
I ought to plumb you ought to plumb he ought to plumb we ought to plumb you ought to plumb they ought to plumb	I ought to be plumbing you ought to be plumbing he ought to be plumbing we ought to be plumbing you ought to be plumbing they ought to be plumbing
Perfect	V-ing perfect
I ought to have plumbed you ought to have plumbed he ought to have plumbed we ought to have plumbed you ought to have plumbed they ought to have plumbed	I ought to have been plumbing you ought to have been plumbing he ought to have been plumbing we ought to have been plumbing you ought to have been plumbing they ought to have been plumbing

Negation

Simple form	V-ing form
I ought not to plumb you ought not to plumb he ought not to plumb we ought not to plumb you ought not to plumb they ought not to plumb	I ought not to plumbing you ought not to plumbing he ought not to plumbing we ought not to plumbing you ought not to plumbing they ought not to plumbing
Perfect	V-ing perfect
I ought not to have plumbed you ought not to have plumbed he ought not to have plumbed we ought not to have plumbed you ought not to have plumbed they ought not to have plumbed	I ought not to have been plumbing you ought not to have been plumbing he ought not to have been plumbing we ought not to have been plumbing you ought not to have been plumbing they ought not to have been plumbing

Interrogative form

Simple form	V-ing form
ought to I plumb? ought to you plumb? ought to he plumb? ought to we plumb? ought to you plumb? ought to they plumb?	ought to I be plumbing? ought to you be plumbing? ought to he be plumbing? ought to we be plumbing? ought to you be plumbing? ought to they be plumbing?
Perfect	V-ing perfect
ought to I have plumbed? ought to you have plumbed? ought to he have plumbed? ought to we have plumbed? ought to you have plumbed? ought to they have plumbed?	ought to I have been plumbing? ought to you have been plumbing? ought to he have been plumbing? ought to we have been plumbing? ought to you have been plumbing? ought to they have been plumbing?

Interro-negative form

Simple form	V-ing form
ought I not to plumb? ought you not to plumb? ought he not to plumb? ought we not to plumb? ought you not to plumb? ought they not to plumb?	ought I not to be plumbing? ought you not to be plumbing? ought he not to be plumbing? ought we not to be plumbing? ought you not to be plumbing? ought they not to be plumbing?
Perfect	V-ing perfect
ought I not to have plumbed? ought you not to have plumbed? ought he not to have plumbed? ought we not to have plumbed? ought you not to have plumbed? ought they not to have plumbed?	ought I not to have been plumbing? ought you not to have been plumbing? ought he not to have been plumbing? ought we not to have been plumbing? ought you not to have been plumbing? ought they not to have been plumbing?