English verb conjugation
MAY UPGRADE

Regular verb: upgrade - upgraded - upgraded

Affirmation

Simple form	V-ing form
I may upgrade you may upgrade he may upgrade we may upgrade you may upgrade they may upgrade	I may be upgrading you may be upgrading he may be upgrading we may be upgrading you may be upgrading they may be upgrading
Perfect	V-ing perfect
I may have upgraded you may have upgraded he may have upgraded we may have upgraded you may have upgraded they may have upgraded	I may have been upgrading you may have been upgrading he may have been upgrading we may have been upgrading you may have been upgrading they may have been upgrading

Negation

Simple form	V-ing form
I may not upgrade you may not upgrade he may not upgrade we may not upgrade you may not upgrade they may not upgrade	I may not be upgrading you may not be upgrading he may not be upgrading we may not be upgrading you may not be upgrading they may not be upgrading
Perfect	V-ing perfect
I may not have upgraded you may not have upgraded he may not have upgraded we may not have upgraded you may not have upgraded they may not have upgraded	I may not have been upgrading you may not have been upgrading he may not have been upgrading we may not have been upgrading you may not have been upgrading they may not have been upgrading

Interrogative form

Simple form	V-ing form
may I upgrade? may you upgrade? may he upgrade? may we upgrade? may you upgrade? may they upgrade?	may I be upgrading? may you be upgrading? may he be upgrading? may we be upgrading? may you be upgrading? may they be upgrading?
Perfect	V-ing perfect
may I have upgraded? may you have upgraded? may he have upgraded? may we have upgraded? may you have upgraded? may they have upgraded?	may I have been upgrading? may you have been upgrading? may he have been upgrading? may we have been upgrading? may you have been upgrading? may they have been upgrading?

Interro-negative form

Simple form	V-ing form
may I not upgrade? may you not upgrade? may he not upgrade? may we not upgrade? may you not upgrade? may they not upgrade?	may I not be upgrading? may you not be upgrading? may he not be upgrading? may we not be upgrading? may you not be upgrading? may they not be upgrading?
Perfect	V-ing perfect
may I not have upgraded? may you not have upgraded? may he not have upgraded? may we not have upgraded? may you not have upgraded? may they not have upgraded?	may I not have been upgrading? may you not have been upgrading? may he not have been upgrading? may we not have been upgrading? may you not have been upgrading? may they not have been upgrading?