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 mayn't upgrade you mayn't upgrade he mayn't upgrade we mayn't upgrade you mayn't upgrade they mayn't upgrade	I mayn't be upgrading you mayn't be upgrading he mayn't be upgrading we mayn't be upgrading you mayn't be upgrading they mayn't be upgrading
Perfect	V-ing perfect
I mayn't have upgraded you mayn't have upgraded he mayn't have upgraded we mayn't have upgraded you mayn't have upgraded they mayn't have upgraded	I mayn't have been upgrading you mayn't have been upgrading he mayn't have been upgrading we mayn't have been upgrading you mayn't have been upgrading they mayn't 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
mayn't I upgrade? mayn't you upgrade? mayn't he upgrade? mayn't we upgrade? mayn't you upgrade? mayn't they upgrade?	mayn't I be upgrading? mayn't you be upgrading? mayn't he be upgrading? mayn't we be upgrading? mayn't you be upgrading? mayn't they be upgrading?
Perfect	V-ing perfect
mayn't I have upgraded? mayn't you have upgraded? mayn't he have upgraded? mayn't we have upgraded? mayn't you have upgraded? mayn't they have upgraded?	mayn't I have been upgrading? mayn't you have been upgrading? mayn't he have been upgrading? mayn't we have been upgrading? mayn't you have been upgrading? mayn't they have been upgrading?