may presharpen
Regular verb: presharpen - presharpened- presharpened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may presharpen
you may presharpen
he may presharpen
we may presharpen
you may presharpen
they may presharpen 	I may be presharpening
you may be presharpening
he may be presharpening
we may be presharpening
you may be presharpening
they may be presharpening	I may have presharpened
you may have presharpened
he may have presharpened
we may have presharpened
you may have presharpened
they may have presharpened	I may have been presharpening
you may have been presharpening
he may have been presharpening
we may have been presharpening
you may have been presharpening
they may have been presharpening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not presharpen
you may not presharpen
he may not presharpen
we may not presharpen
you may not presharpen
they may not presharpen 	I may not be presharpening
you may not be presharpening
he may not be presharpening
we may not be presharpening
you may not be presharpening
they may not be presharpening	I may not have presharpened
you may not have presharpened
he may not have presharpened
we may not have presharpened
you may not have presharpened
they may not have presharpened	I may not have been presharpening
you may not have been presharpening
he may not have been presharpening
we may not have been presharpening
you may not have been presharpening
they may not have been presharpening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I presharpen?
may you presharpen?
may he presharpen?
may we presharpen?
may you presharpen?
may they presharpen? 	may I be presharpening?
may you be presharpening?
may he be presharpening?
may we be presharpening?
may you be presharpening?
may they be presharpening? 	may I have presharpened?
may you have presharpened?
may he have presharpened?
may we have presharpened?
may you have presharpened?
may they have presharpened? 	may I have been presharpening?
may you have been presharpening?
may he have been presharpening?
may we have been presharpening?
may you have been presharpening?
may they have been presharpening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not presharpen?
may you not presharpen?
may he not presharpen?
may we not presharpen?
may you not presharpen?
may they not presharpen? 	may I not be presharpening?
may you not be presharpening?
may he not be presharpening?
may we not be presharpening?
may you not be presharpening?
may they not be presharpening? 	may I not have presharpened?
may you not have presharpened?
may he not have presharpened?
may we not have presharpened?
may you not have presharpened?
may they not have presharpened? 	may I not have been presharpening?
may you not have been presharpening?
may he not have been presharpening?
may we not have been presharpening?
may you not have been presharpening?
may they not have been presharpening?