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
he 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
he 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
he 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
he 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 ought not to clump
you ought not to clump
he ought not to clump
we ought not to clump
you ought not to clump
they ought not to clump 	I ought not to clumping
you ought not to clumping
he ought not to clumping
we ought not to clumping
you ought not to clumping
they ought not to clumping	I ought not to have clumped
you ought not to have clumped
he ought not to have clumped
we ought not to have clumped
you ought not to have clumped
they ought not to have clumped	I ought not to have been clumping
you ought not to have been clumping
he ought not to have been clumping
we ought not to have been clumping
you ought not to have been clumping
they ought not 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 he 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 he 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 he 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 he 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 	
ought I not to clump?
ought you not to clump?
ought he not to clump?
ought we not to clump?
ought you not to clump?
ought they not to clump? 	ought I not to be clumping?
ought you not to be clumping?
ought he not to be clumping?
ought we not to be clumping?
ought you not to be clumping?
ought they not to be clumping? 	ought I not to have clumped?
ought you not to have clumped?
ought he not to have clumped?
ought we not to have clumped?
ought you not to have clumped?
ought they not to have clumped? 	ought I not to have been clumping?
ought you not to have been clumping?
ought he not to have been clumping?
ought we not to have been clumping?
ought you not to have been clumping?
ought they not to have been clumping?