ought to shudder
Regular verb: shudder - shuddered- shuddered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to shudder
you ought to shudder
he ought to shudder
we ought to shudder
you ought to shudder
they ought to shudder 	I ought to be shuddering
you ought to be shuddering
he ought to be shuddering
we ought to be shuddering
you ought to be shuddering
they ought to be shuddering	I ought to have shuddered
you ought to have shuddered
he ought to have shuddered
we ought to have shuddered
you ought to have shuddered
they ought to have shuddered	I ought to have been shuddering
you ought to have been shuddering
he ought to have been shuddering
we ought to have been shuddering
you ought to have been shuddering
they ought to have been shuddering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to shudder
you ought not to shudder
he ought not to shudder
we ought not to shudder
you ought not to shudder
they ought not to shudder 	I ought not to shuddering
you ought not to shuddering
he ought not to shuddering
we ought not to shuddering
you ought not to shuddering
they ought not to shuddering	I ought not to have shuddered
you ought not to have shuddered
he ought not to have shuddered
we ought not to have shuddered
you ought not to have shuddered
they ought not to have shuddered	I ought not to have been shuddering
you ought not to have been shuddering
he ought not to have been shuddering
we ought not to have been shuddering
you ought not to have been shuddering
they ought not to have been shuddering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I shudder?
ought to you shudder?
ought to he shudder?
ought to we shudder?
ought to you shudder?
ought to they shudder? 	ought to I be shuddering?
ought to you be shuddering?
ought to he be shuddering?
ought to we be shuddering?
ought to you be shuddering?
ought to they be shuddering? 	ought to I have shuddered?
ought to you have shuddered?
ought to he have shuddered?
ought to we have shuddered?
ought to you have shuddered?
ought to they have shuddered? 	ought to I have been shuddering?
ought to you have been shuddering?
ought to he have been shuddering?
ought to we have been shuddering?
ought to you have been shuddering?
ought to they have been shuddering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to shudder?
ought you not to shudder?
ought he not to shudder?
ought we not to shudder?
ought you not to shudder?
ought they not to shudder? 	ought I not to be shuddering?
ought you not to be shuddering?
ought he not to be shuddering?
ought we not to be shuddering?
ought you not to be shuddering?
ought they not to be shuddering? 	ought I not to have shuddered?
ought you not to have shuddered?
ought he not to have shuddered?
ought we not to have shuddered?
ought you not to have shuddered?
ought they not to have shuddered? 	ought I not to have been shuddering?
ought you not to have been shuddering?
ought he not to have been shuddering?
ought we not to have been shuddering?
ought you not to have been shuddering?
ought they not to have been shuddering?