ought to refilter
Regular verb: refilter - refiltered- refiltered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to refilter
you ought to refilter
he ought to refilter
we ought to refilter
you ought to refilter
they ought to refilter 	I ought to be refiltering
you ought to be refiltering
he ought to be refiltering
we ought to be refiltering
you ought to be refiltering
they ought to be refiltering	I ought to have refiltered
you ought to have refiltered
he ought to have refiltered
we ought to have refiltered
you ought to have refiltered
they ought to have refiltered	I ought to have been refiltering
you ought to have been refiltering
he ought to have been refiltering
we ought to have been refiltering
you ought to have been refiltering
they ought to have been refiltering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to refilter
you ought not to refilter
he ought not to refilter
we ought not to refilter
you ought not to refilter
they ought not to refilter 	I ought not to refiltering
you ought not to refiltering
he ought not to refiltering
we ought not to refiltering
you ought not to refiltering
they ought not to refiltering	I ought not to have refiltered
you ought not to have refiltered
he ought not to have refiltered
we ought not to have refiltered
you ought not to have refiltered
they ought not to have refiltered	I ought not to have been refiltering
you ought not to have been refiltering
he ought not to have been refiltering
we ought not to have been refiltering
you ought not to have been refiltering
they ought not to have been refiltering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I refilter?
ought to you refilter?
ought to he refilter?
ought to we refilter?
ought to you refilter?
ought to they refilter? 	ought to I be refiltering?
ought to you be refiltering?
ought to he be refiltering?
ought to we be refiltering?
ought to you be refiltering?
ought to they be refiltering? 	ought to I have refiltered?
ought to you have refiltered?
ought to he have refiltered?
ought to we have refiltered?
ought to you have refiltered?
ought to they have refiltered? 	ought to I have been refiltering?
ought to you have been refiltering?
ought to he have been refiltering?
ought to we have been refiltering?
ought to you have been refiltering?
ought to they have been refiltering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to refilter?
ought you not to refilter?
ought he not to refilter?
ought we not to refilter?
ought you not to refilter?
ought they not to refilter? 	ought I not to be refiltering?
ought you not to be refiltering?
ought he not to be refiltering?
ought we not to be refiltering?
ought you not to be refiltering?
ought they not to be refiltering? 	ought I not to have refiltered?
ought you not to have refiltered?
ought he not to have refiltered?
ought we not to have refiltered?
ought you not to have refiltered?
ought they not to have refiltered? 	ought I not to have been refiltering?
ought you not to have been refiltering?
ought he not to have been refiltering?
ought we not to have been refiltering?
ought you not to have been refiltering?
ought they not to have been refiltering?