ought to clump
Regular verb: clump - clumped- clumped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to clump
you ought to clump
she ought to clump
we ought to clump
you ought to clump
they ought to clump 	I ought to be clumping
you ought to be clumping
she ought to be clumping
we ought to be clumping
you ought to be clumping
they ought to be clumping	I ought to have clumped
you ought to have clumped
she ought to have clumped
we ought to have clumped
you ought to have clumped
they ought to have clumped	I ought to have been clumping
you ought to have been clumping
she ought to have been clumping
we ought to have been clumping
you ought to have been clumping
they ought to have been clumping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to clump
you oughtn't to clump
she oughtn't to clump
we oughtn't to clump
you oughtn't to clump
they oughtn't to clump 	I oughtn't to be clumping
you oughtn't to be clumping
she oughtn't to be clumping
we oughtn't to be clumping
you oughtn't to be clumping
they oughtn't to be clumping	I oughtn't to have clumped
you oughtn't to have clumped
she oughtn't to have clumped
we oughtn't to have clumped
you oughtn't to have clumped
they oughtn't to have clumped	I oughtn't to have been clumping
you oughtn't to have been clumping
she oughtn't to have been clumping
we oughtn't to have been clumping
you oughtn't to have been clumping
they oughtn't to have been clumping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I clump?
ought to you clump?
ought to she clump?
ought to we clump?
ought to you clump?
ought to they clump? 	ought to I be clumping?
ought to you be clumping?
ought to she be clumping?
ought to we be clumping?
ought to you be clumping?
ought to they be clumping? 	ought to I have clumped?
ought to you have clumped?
ought to she have clumped?
ought to we have clumped?
ought to you have clumped?
ought to they have clumped? 	ought to I have been clumping?
ought to you have been clumping?
ought to she have been clumping?
ought to we have been clumping?
ought to you have been clumping?
ought to they have been clumping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to clump?
oughtn't you to clump?
oughtn't she to clump?
oughtn't we to clump?
oughtn't you to clump?
oughtn't they to clump? 	oughtn't I to be clumping?
oughtn't you to be clumping?
oughtn't she to be clumping?
oughtn't we to be clumping?
oughtn't you to be clumping?
oughtn't they to be clumping? 	oughtn't I to have clumped?
oughtn't you to have clumped?
oughtn't she to have clumped?
oughtn't we to have clumped?
oughtn't you to have clumped?
oughtn't they to have clumped? 	oughtn't I to have been clumping?
oughtn't you to have been clumping?
oughtn't she to have been clumping?
oughtn't we to have been clumping?
oughtn't you to have been clumping?
oughtn't they to have been clumping?