may preinstruct
Regular verb: preinstruct - preinstructed- preinstructed

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

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

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

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