English verb conjugation
MAY UPSHIFT

Regular verb: upshift - upshifted - upshifted

Affirmation

Simple form	V-ing form
I may upshift you may upshift he may upshift we may upshift you may upshift they may upshift	I may be upshifting you may be upshifting he may be upshifting we may be upshifting you may be upshifting they may be upshifting
Perfect	V-ing perfect
I may have upshifted you may have upshifted he may have upshifted we may have upshifted you may have upshifted they may have upshifted	I may have been upshifting you may have been upshifting he may have been upshifting we may have been upshifting you may have been upshifting they may have been upshifting

Negation

Simple form	V-ing form
I may not upshift you may not upshift he may not upshift we may not upshift you may not upshift they may not upshift	I may not be upshifting you may not be upshifting he may not be upshifting we may not be upshifting you may not be upshifting they may not be upshifting
Perfect	V-ing perfect
I may not have upshifted you may not have upshifted he may not have upshifted we may not have upshifted you may not have upshifted they may not have upshifted	I may not have been upshifting you may not have been upshifting he may not have been upshifting we may not have been upshifting you may not have been upshifting they may not have been upshifting

Interrogative form

Simple form	V-ing form
may I upshift? may you upshift? may he upshift? may we upshift? may you upshift? may they upshift?	may I be upshifting? may you be upshifting? may he be upshifting? may we be upshifting? may you be upshifting? may they be upshifting?
Perfect	V-ing perfect
may I have upshifted? may you have upshifted? may he have upshifted? may we have upshifted? may you have upshifted? may they have upshifted?	may I have been upshifting? may you have been upshifting? may he have been upshifting? may we have been upshifting? may you have been upshifting? may they have been upshifting?

Interro-negative form

Simple form	V-ing form
may I not upshift? may you not upshift? may he not upshift? may we not upshift? may you not upshift? may they not upshift?	may I not be upshifting? may you not be upshifting? may he not be upshifting? may we not be upshifting? may you not be upshifting? may they not be upshifting?
Perfect	V-ing perfect
may I not have upshifted? may you not have upshifted? may he not have upshifted? may we not have upshifted? may you not have upshifted? may they not have upshifted?	may I not have been upshifting? may you not have been upshifting? may he not have been upshifting? may we not have been upshifting? may you not have been upshifting? may they not have been upshifting?