ought to scum
Regular verb: scum - scummed- scummed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to scum
you ought to scum
he ought to scum
we ought to scum
you ought to scum
they ought to scum 	I ought to be scumming
you ought to be scumming
he ought to be scumming
we ought to be scumming
you ought to be scumming
they ought to be scumming	I ought to have scummed
you ought to have scummed
he ought to have scummed
we ought to have scummed
you ought to have scummed
they ought to have scummed	I ought to have been scumming
you ought to have been scumming
he ought to have been scumming
we ought to have been scumming
you ought to have been scumming
they ought to have been scumming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to scum
you ought not to scum
he ought not to scum
we ought not to scum
you ought not to scum
they ought not to scum 	I ought not to scumming
you ought not to scumming
he ought not to scumming
we ought not to scumming
you ought not to scumming
they ought not to scumming	I ought not to have scummed
you ought not to have scummed
he ought not to have scummed
we ought not to have scummed
you ought not to have scummed
they ought not to have scummed	I ought not to have been scumming
you ought not to have been scumming
he ought not to have been scumming
we ought not to have been scumming
you ought not to have been scumming
they ought not to have been scumming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I scum?
ought to you scum?
ought to he scum?
ought to we scum?
ought to you scum?
ought to they scum? 	ought to I be scumming?
ought to you be scumming?
ought to he be scumming?
ought to we be scumming?
ought to you be scumming?
ought to they be scumming? 	ought to I have scummed?
ought to you have scummed?
ought to he have scummed?
ought to we have scummed?
ought to you have scummed?
ought to they have scummed? 	ought to I have been scumming?
ought to you have been scumming?
ought to he have been scumming?
ought to we have been scumming?
ought to you have been scumming?
ought to they have been scumming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to scum?
ought you not to scum?
ought he not to scum?
ought we not to scum?
ought you not to scum?
ought they not to scum? 	ought I not to be scumming?
ought you not to be scumming?
ought he not to be scumming?
ought we not to be scumming?
ought you not to be scumming?
ought they not to be scumming? 	ought I not to have scummed?
ought you not to have scummed?
ought he not to have scummed?
ought we not to have scummed?
ought you not to have scummed?
ought they not to have scummed? 	ought I not to have been scumming?
ought you not to have been scumming?
ought he not to have been scumming?
ought we not to have been scumming?
ought you not to have been scumming?
ought they not to have been scumming?