English verb conjugation
MAY STAMP

Regular verb: stamp - stamped - stamped

Affirmation

Simple form	V-ing form
I may stamp you may stamp he may stamp we may stamp you may stamp they may stamp	I may be stamping you may be stamping he may be stamping we may be stamping you may be stamping they may be stamping
Perfect	V-ing perfect
I may have stamped you may have stamped he may have stamped we may have stamped you may have stamped they may have stamped	I may have been stamping you may have been stamping he may have been stamping we may have been stamping you may have been stamping they may have been stamping

Negation

Simple form	V-ing form
I mayn't stamp you mayn't stamp he mayn't stamp we mayn't stamp you mayn't stamp they mayn't stamp	I mayn't be stamping you mayn't be stamping he mayn't be stamping we mayn't be stamping you mayn't be stamping they mayn't be stamping
Perfect	V-ing perfect
I mayn't have stamped you mayn't have stamped he mayn't have stamped we mayn't have stamped you mayn't have stamped they mayn't have stamped	I mayn't have been stamping you mayn't have been stamping he mayn't have been stamping we mayn't have been stamping you mayn't have been stamping they mayn't have been stamping

Interrogative form

Simple form	V-ing form
may I stamp? may you stamp? may he stamp? may we stamp? may you stamp? may they stamp?	may I be stamping? may you be stamping? may he be stamping? may we be stamping? may you be stamping? may they be stamping?
Perfect	V-ing perfect
may I have stamped? may you have stamped? may he have stamped? may we have stamped? may you have stamped? may they have stamped?	may I have been stamping? may you have been stamping? may he have been stamping? may we have been stamping? may you have been stamping? may they have been stamping?

Interro-negative form

Simple form	V-ing form
mayn't I stamp? mayn't you stamp? mayn't he stamp? mayn't we stamp? mayn't you stamp? mayn't they stamp?	mayn't I be stamping? mayn't you be stamping? mayn't he be stamping? mayn't we be stamping? mayn't you be stamping? mayn't they be stamping?
Perfect	V-ing perfect
mayn't I have stamped? mayn't you have stamped? mayn't he have stamped? mayn't we have stamped? mayn't you have stamped? mayn't they have stamped?	mayn't I have been stamping? mayn't you have been stamping? mayn't he have been stamping? mayn't we have been stamping? mayn't you have been stamping? mayn't they have been stamping?