ought to plumb
Regular verb: plumb - plumbed- plumbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I oughtn't to plumb
you oughtn't to plumb
he oughtn't to plumb
we oughtn't to plumb
you oughtn't to plumb
they oughtn't to plumb 	I oughtn't to be plumbing
you oughtn't to be plumbing
he oughtn't to be plumbing
we oughtn't to be plumbing
you oughtn't to be plumbing
they oughtn't to be plumbing	I oughtn't to have plumbed
you oughtn't to have plumbed
he oughtn't to have plumbed
we oughtn't to have plumbed
you oughtn't to have plumbed
they oughtn't to have plumbed	I oughtn't to have been plumbing
you oughtn't to have been plumbing
he oughtn't to have been plumbing
we oughtn't to have been plumbing
you oughtn't to have been plumbing
they oughtn't to have been plumbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
oughtn't I to plumb?
oughtn't you to plumb?
oughtn't he to plumb?
oughtn't we to plumb?
oughtn't you to plumb?
oughtn't they to plumb? 	oughtn't I to be plumbing?
oughtn't you to be plumbing?
oughtn't he to be plumbing?
oughtn't we to be plumbing?
oughtn't you to be plumbing?
oughtn't they to be plumbing? 	oughtn't I to have plumbed?
oughtn't you to have plumbed?
oughtn't he to have plumbed?
oughtn't we to have plumbed?
oughtn't you to have plumbed?
oughtn't they to have plumbed? 	oughtn't I to have been plumbing?
oughtn't you to have been plumbing?
oughtn't he to have been plumbing?
oughtn't we to have been plumbing?
oughtn't you to have been plumbing?
oughtn't they to have been plumbing?