ought to preinstruct
Regular verb: preinstruct - preinstructed- preinstructed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to preinstruct
you ought to preinstruct
he ought to preinstruct
we ought to preinstruct
you ought to preinstruct
they ought to preinstruct 	I ought to be preinstructing
you ought to be preinstructing
he ought to be preinstructing
we ought to be preinstructing
you ought to be preinstructing
they ought to be preinstructing	I ought to have preinstructed
you ought to have preinstructed
he ought to have preinstructed
we ought to have preinstructed
you ought to have preinstructed
they ought to have preinstructed	I ought to have been preinstructing
you ought to have been preinstructing
he ought to have been preinstructing
we ought to have been preinstructing
you ought to have been preinstructing
they ought to have been preinstructing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to preinstruct
you ought not to preinstruct
he ought not to preinstruct
we ought not to preinstruct
you ought not to preinstruct
they ought not to preinstruct 	I ought not to preinstructing
you ought not to preinstructing
he ought not to preinstructing
we ought not to preinstructing
you ought not to preinstructing
they ought not to preinstructing	I ought not to have preinstructed
you ought not to have preinstructed
he ought not to have preinstructed
we ought not to have preinstructed
you ought not to have preinstructed
they ought not to have preinstructed	I ought not to have been preinstructing
you ought not to have been preinstructing
he ought not to have been preinstructing
we ought not to have been preinstructing
you ought not to have been preinstructing
they ought not to have been preinstructing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I preinstruct?
ought to you preinstruct?
ought to he preinstruct?
ought to we preinstruct?
ought to you preinstruct?
ought to they preinstruct? 	ought to I be preinstructing?
ought to you be preinstructing?
ought to he be preinstructing?
ought to we be preinstructing?
ought to you be preinstructing?
ought to they be preinstructing? 	ought to I have preinstructed?
ought to you have preinstructed?
ought to he have preinstructed?
ought to we have preinstructed?
ought to you have preinstructed?
ought to they have preinstructed? 	ought to I have been preinstructing?
ought to you have been preinstructing?
ought to he have been preinstructing?
ought to we have been preinstructing?
ought to you have been preinstructing?
ought to they have been preinstructing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to preinstruct?
ought you not to preinstruct?
ought he not to preinstruct?
ought we not to preinstruct?
ought you not to preinstruct?
ought they not to preinstruct? 	ought I not to be preinstructing?
ought you not to be preinstructing?
ought he not to be preinstructing?
ought we not to be preinstructing?
ought you not to be preinstructing?
ought they not to be preinstructing? 	ought I not to have preinstructed?
ought you not to have preinstructed?
ought he not to have preinstructed?
ought we not to have preinstructed?
ought you not to have preinstructed?
ought they not to have preinstructed? 	ought I not to have been preinstructing?
ought you not to have been preinstructing?
ought he not to have been preinstructing?
ought we not to have been preinstructing?
ought you not to have been preinstructing?
ought they not to have been preinstructing?