ought to infest
Regular verb: infest - infested- infested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to infest
you ought to infest
he ought to infest
we ought to infest
you ought to infest
they ought to infest 	I ought to be infesting
you ought to be infesting
he ought to be infesting
we ought to be infesting
you ought to be infesting
they ought to be infesting	I ought to have infested
you ought to have infested
he ought to have infested
we ought to have infested
you ought to have infested
they ought to have infested	I ought to have been infesting
you ought to have been infesting
he ought to have been infesting
we ought to have been infesting
you ought to have been infesting
they ought to have been infesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to infest
you ought not to infest
he ought not to infest
we ought not to infest
you ought not to infest
they ought not to infest 	I ought not to infesting
you ought not to infesting
he ought not to infesting
we ought not to infesting
you ought not to infesting
they ought not to infesting	I ought not to have infested
you ought not to have infested
he ought not to have infested
we ought not to have infested
you ought not to have infested
they ought not to have infested	I ought not to have been infesting
you ought not to have been infesting
he ought not to have been infesting
we ought not to have been infesting
you ought not to have been infesting
they ought not to have been infesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I infest?
ought to you infest?
ought to he infest?
ought to we infest?
ought to you infest?
ought to they infest? 	ought to I be infesting?
ought to you be infesting?
ought to he be infesting?
ought to we be infesting?
ought to you be infesting?
ought to they be infesting? 	ought to I have infested?
ought to you have infested?
ought to he have infested?
ought to we have infested?
ought to you have infested?
ought to they have infested? 	ought to I have been infesting?
ought to you have been infesting?
ought to he have been infesting?
ought to we have been infesting?
ought to you have been infesting?
ought to they have been infesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to infest?
ought you not to infest?
ought he not to infest?
ought we not to infest?
ought you not to infest?
ought they not to infest? 	ought I not to be infesting?
ought you not to be infesting?
ought he not to be infesting?
ought we not to be infesting?
ought you not to be infesting?
ought they not to be infesting? 	ought I not to have infested?
ought you not to have infested?
ought he not to have infested?
ought we not to have infested?
ought you not to have infested?
ought they not to have infested? 	ought I not to have been infesting?
ought you not to have been infesting?
ought he not to have been infesting?
ought we not to have been infesting?
ought you not to have been infesting?
ought they not to have been infesting?