ought to clamber
Regular verb: clamber - clambered- clambered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to clamber
you ought to clamber
he ought to clamber
we ought to clamber
you ought to clamber
they ought to clamber 	I ought to be clambering
you ought to be clambering
he ought to be clambering
we ought to be clambering
you ought to be clambering
they ought to be clambering	I ought to have clambered
you ought to have clambered
he ought to have clambered
we ought to have clambered
you ought to have clambered
they ought to have clambered	I ought to have been clambering
you ought to have been clambering
he ought to have been clambering
we ought to have been clambering
you ought to have been clambering
they ought to have been clambering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to clamber
you ought not to clamber
he ought not to clamber
we ought not to clamber
you ought not to clamber
they ought not to clamber 	I ought not to clambering
you ought not to clambering
he ought not to clambering
we ought not to clambering
you ought not to clambering
they ought not to clambering	I ought not to have clambered
you ought not to have clambered
he ought not to have clambered
we ought not to have clambered
you ought not to have clambered
they ought not to have clambered	I ought not to have been clambering
you ought not to have been clambering
he ought not to have been clambering
we ought not to have been clambering
you ought not to have been clambering
they ought not to have been clambering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I clamber?
ought to you clamber?
ought to he clamber?
ought to we clamber?
ought to you clamber?
ought to they clamber? 	ought to I be clambering?
ought to you be clambering?
ought to he be clambering?
ought to we be clambering?
ought to you be clambering?
ought to they be clambering? 	ought to I have clambered?
ought to you have clambered?
ought to he have clambered?
ought to we have clambered?
ought to you have clambered?
ought to they have clambered? 	ought to I have been clambering?
ought to you have been clambering?
ought to he have been clambering?
ought to we have been clambering?
ought to you have been clambering?
ought to they have been clambering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to clamber?
ought you not to clamber?
ought he not to clamber?
ought we not to clamber?
ought you not to clamber?
ought they not to clamber? 	ought I not to be clambering?
ought you not to be clambering?
ought he not to be clambering?
ought we not to be clambering?
ought you not to be clambering?
ought they not to be clambering? 	ought I not to have clambered?
ought you not to have clambered?
ought he not to have clambered?
ought we not to have clambered?
ought you not to have clambered?
ought they not to have clambered? 	ought I not to have been clambering?
ought you not to have been clambering?
ought he not to have been clambering?
ought we not to have been clambering?
ought you not to have been clambering?
ought they not to have been clambering?