English verb conjugation
MAY POSTMARK

Regular verb: postmark - postmarked - postmarked

Affirmation

Simple form	V-ing form
I may postmark you may postmark he may postmark we may postmark you may postmark they may postmark	I may be postmarking you may be postmarking he may be postmarking we may be postmarking you may be postmarking they may be postmarking
Perfect	V-ing perfect
I may have postmarked you may have postmarked he may have postmarked we may have postmarked you may have postmarked they may have postmarked	I may have been postmarking you may have been postmarking he may have been postmarking we may have been postmarking you may have been postmarking they may have been postmarking

Negation

Simple form	V-ing form
I mayn't postmark you mayn't postmark he mayn't postmark we mayn't postmark you mayn't postmark they mayn't postmark	I mayn't be postmarking you mayn't be postmarking he mayn't be postmarking we mayn't be postmarking you mayn't be postmarking they mayn't be postmarking
Perfect	V-ing perfect
I mayn't have postmarked you mayn't have postmarked he mayn't have postmarked we mayn't have postmarked you mayn't have postmarked they mayn't have postmarked	I mayn't have been postmarking you mayn't have been postmarking he mayn't have been postmarking we mayn't have been postmarking you mayn't have been postmarking they mayn't have been postmarking

Interrogative form

Simple form	V-ing form
may I postmark? may you postmark? may he postmark? may we postmark? may you postmark? may they postmark?	may I be postmarking? may you be postmarking? may he be postmarking? may we be postmarking? may you be postmarking? may they be postmarking?
Perfect	V-ing perfect
may I have postmarked? may you have postmarked? may he have postmarked? may we have postmarked? may you have postmarked? may they have postmarked?	may I have been postmarking? may you have been postmarking? may he have been postmarking? may we have been postmarking? may you have been postmarking? may they have been postmarking?

Interro-negative form

Simple form	V-ing form
mayn't I postmark? mayn't you postmark? mayn't he postmark? mayn't we postmark? mayn't you postmark? mayn't they postmark?	mayn't I be postmarking? mayn't you be postmarking? mayn't he be postmarking? mayn't we be postmarking? mayn't you be postmarking? mayn't they be postmarking?
Perfect	V-ing perfect
mayn't I have postmarked? mayn't you have postmarked? mayn't he have postmarked? mayn't we have postmarked? mayn't you have postmarked? mayn't they have postmarked?	mayn't I have been postmarking? mayn't you have been postmarking? mayn't he have been postmarking? mayn't we have been postmarking? mayn't you have been postmarking? mayn't they have been postmarking?