English verb conjugation
MAY SCREW

Regular verb: screw - screwed - screwed

Affirmation

Simple form	V-ing form
I may screw you may screw he may screw we may screw you may screw they may screw	I may be screwing you may be screwing he may be screwing we may be screwing you may be screwing they may be screwing
Perfect	V-ing perfect
I may have screwed you may have screwed he may have screwed we may have screwed you may have screwed they may have screwed	I may have been screwing you may have been screwing he may have been screwing we may have been screwing you may have been screwing they may have been screwing

Negation

Simple form	V-ing form
I may not screw you may not screw he may not screw we may not screw you may not screw they may not screw	I may not be screwing you may not be screwing he may not be screwing we may not be screwing you may not be screwing they may not be screwing
Perfect	V-ing perfect
I may not have screwed you may not have screwed he may not have screwed we may not have screwed you may not have screwed they may not have screwed	I may not have been screwing you may not have been screwing he may not have been screwing we may not have been screwing you may not have been screwing they may not have been screwing

Interrogative form

Simple form	V-ing form
may I screw? may you screw? may he screw? may we screw? may you screw? may they screw?	may I be screwing? may you be screwing? may he be screwing? may we be screwing? may you be screwing? may they be screwing?
Perfect	V-ing perfect
may I have screwed? may you have screwed? may he have screwed? may we have screwed? may you have screwed? may they have screwed?	may I have been screwing? may you have been screwing? may he have been screwing? may we have been screwing? may you have been screwing? may they have been screwing?

Interro-negative form

Simple form	V-ing form
may I not screw? may you not screw? may he not screw? may we not screw? may you not screw? may they not screw?	may I not be screwing? may you not be screwing? may he not be screwing? may we not be screwing? may you not be screwing? may they not be screwing?
Perfect	V-ing perfect
may I not have screwed? may you not have screwed? may he not have screwed? may we not have screwed? may you not have screwed? may they not have screwed?	may I not have been screwing? may you not have been screwing? may he not have been screwing? may we not have been screwing? may you not have been screwing? may they not have been screwing?