ought to retard
Regular verb: retard - retarded- retarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to retard
you ought to retard
he ought to retard
we ought to retard
you ought to retard
they ought to retard 	I ought to be retarding
you ought to be retarding
he ought to be retarding
we ought to be retarding
you ought to be retarding
they ought to be retarding	I ought to have retarded
you ought to have retarded
he ought to have retarded
we ought to have retarded
you ought to have retarded
they ought to have retarded	I ought to have been retarding
you ought to have been retarding
he ought to have been retarding
we ought to have been retarding
you ought to have been retarding
they ought to have been retarding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to retard
you ought not to retard
he ought not to retard
we ought not to retard
you ought not to retard
they ought not to retard 	I ought not to retarding
you ought not to retarding
he ought not to retarding
we ought not to retarding
you ought not to retarding
they ought not to retarding	I ought not to have retarded
you ought not to have retarded
he ought not to have retarded
we ought not to have retarded
you ought not to have retarded
they ought not to have retarded	I ought not to have been retarding
you ought not to have been retarding
he ought not to have been retarding
we ought not to have been retarding
you ought not to have been retarding
they ought not to have been retarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I retard?
ought to you retard?
ought to he retard?
ought to we retard?
ought to you retard?
ought to they retard? 	ought to I be retarding?
ought to you be retarding?
ought to he be retarding?
ought to we be retarding?
ought to you be retarding?
ought to they be retarding? 	ought to I have retarded?
ought to you have retarded?
ought to he have retarded?
ought to we have retarded?
ought to you have retarded?
ought to they have retarded? 	ought to I have been retarding?
ought to you have been retarding?
ought to he have been retarding?
ought to we have been retarding?
ought to you have been retarding?
ought to they have been retarding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to retard?
ought you not to retard?
ought he not to retard?
ought we not to retard?
ought you not to retard?
ought they not to retard? 	ought I not to be retarding?
ought you not to be retarding?
ought he not to be retarding?
ought we not to be retarding?
ought you not to be retarding?
ought they not to be retarding? 	ought I not to have retarded?
ought you not to have retarded?
ought he not to have retarded?
ought we not to have retarded?
ought you not to have retarded?
ought they not to have retarded? 	ought I not to have been retarding?
ought you not to have been retarding?
ought he not to have been retarding?
ought we not to have been retarding?
ought you not to have been retarding?
ought they not to have been retarding?