English verb conjugation
MAY UPTURN

Regular verb: upturn - upturned - upturned

Affirmation

Simple form	V-ing form
I may upturn you may upturn he may upturn we may upturn you may upturn they may upturn	I may be upturning you may be upturning he may be upturning we may be upturning you may be upturning they may be upturning
Perfect	V-ing perfect
I may have upturned you may have upturned he may have upturned we may have upturned you may have upturned they may have upturned	I may have been upturning you may have been upturning he may have been upturning we may have been upturning you may have been upturning they may have been upturning

Negation

Simple form	V-ing form
I may not upturn you may not upturn he may not upturn we may not upturn you may not upturn they may not upturn	I may not be upturning you may not be upturning he may not be upturning we may not be upturning you may not be upturning they may not be upturning
Perfect	V-ing perfect
I may not have upturned you may not have upturned he may not have upturned we may not have upturned you may not have upturned they may not have upturned	I may not have been upturning you may not have been upturning he may not have been upturning we may not have been upturning you may not have been upturning they may not have been upturning

Interrogative form

Simple form	V-ing form
may I upturn? may you upturn? may he upturn? may we upturn? may you upturn? may they upturn?	may I be upturning? may you be upturning? may he be upturning? may we be upturning? may you be upturning? may they be upturning?
Perfect	V-ing perfect
may I have upturned? may you have upturned? may he have upturned? may we have upturned? may you have upturned? may they have upturned?	may I have been upturning? may you have been upturning? may he have been upturning? may we have been upturning? may you have been upturning? may they have been upturning?

Interro-negative form

Simple form	V-ing form
may I not upturn? may you not upturn? may he not upturn? may we not upturn? may you not upturn? may they not upturn?	may I not be upturning? may you not be upturning? may he not be upturning? may we not be upturning? may you not be upturning? may they not be upturning?
Perfect	V-ing perfect
may I not have upturned? may you not have upturned? may he not have upturned? may we not have upturned? may you not have upturned? may they not have upturned?	may I not have been upturning? may you not have been upturning? may he not have been upturning? may we not have been upturning? may you not have been upturning? may they not have been upturning?