ought to impede
Regular verb: impede - impeded- impeded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to impede
you ought to impede
he ought to impede
we ought to impede
you ought to impede
they ought to impede 	I ought to be impeding
you ought to be impeding
he ought to be impeding
we ought to be impeding
you ought to be impeding
they ought to be impeding	I ought to have impeded
you ought to have impeded
he ought to have impeded
we ought to have impeded
you ought to have impeded
they ought to have impeded	I ought to have been impeding
you ought to have been impeding
he ought to have been impeding
we ought to have been impeding
you ought to have been impeding
they ought to have been impeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to impede
you ought not to impede
he ought not to impede
we ought not to impede
you ought not to impede
they ought not to impede 	I ought not to impeding
you ought not to impeding
he ought not to impeding
we ought not to impeding
you ought not to impeding
they ought not to impeding	I ought not to have impeded
you ought not to have impeded
he ought not to have impeded
we ought not to have impeded
you ought not to have impeded
they ought not to have impeded	I ought not to have been impeding
you ought not to have been impeding
he ought not to have been impeding
we ought not to have been impeding
you ought not to have been impeding
they ought not to have been impeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I impede?
ought to you impede?
ought to he impede?
ought to we impede?
ought to you impede?
ought to they impede? 	ought to I be impeding?
ought to you be impeding?
ought to he be impeding?
ought to we be impeding?
ought to you be impeding?
ought to they be impeding? 	ought to I have impeded?
ought to you have impeded?
ought to he have impeded?
ought to we have impeded?
ought to you have impeded?
ought to they have impeded? 	ought to I have been impeding?
ought to you have been impeding?
ought to he have been impeding?
ought to we have been impeding?
ought to you have been impeding?
ought to they have been impeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to impede?
ought you not to impede?
ought he not to impede?
ought we not to impede?
ought you not to impede?
ought they not to impede? 	ought I not to be impeding?
ought you not to be impeding?
ought he not to be impeding?
ought we not to be impeding?
ought you not to be impeding?
ought they not to be impeding? 	ought I not to have impeded?
ought you not to have impeded?
ought he not to have impeded?
ought we not to have impeded?
ought you not to have impeded?
ought they not to have impeded? 	ought I not to have been impeding?
ought you not to have been impeding?
ought he not to have been impeding?
ought we not to have been impeding?
ought you not to have been impeding?
ought they not to have been impeding?