English verb conjugation
MAY SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form	V-ing form
I may screen you may screen she may screen we may screen you may screen they may screen	I may be screening you may be screening she may be screening we may be screening you may be screening they may be screening
Perfect	V-ing perfect
I may have screened you may have screened she may have screened we may have screened you may have screened they may have screened	I may have been screening you may have been screening she may have been screening we may have been screening you may have been screening they may have been screening

Negation

Simple form	V-ing form
I mayn't screen you mayn't screen she mayn't screen we mayn't screen you mayn't screen they mayn't screen	I mayn't be screening you mayn't be screening she mayn't be screening we mayn't be screening you mayn't be screening they mayn't be screening
Perfect	V-ing perfect
I mayn't have screened you mayn't have screened she mayn't have screened we mayn't have screened you mayn't have screened they mayn't have screened	I mayn't have been screening you mayn't have been screening she mayn't have been screening we mayn't have been screening you mayn't have been screening they mayn't have been screening

Interrogative form

Simple form	V-ing form
may I screen? may you screen? may she screen? may we screen? may you screen? may they screen?	may I be screening? may you be screening? may she be screening? may we be screening? may you be screening? may they be screening?
Perfect	V-ing perfect
may I have screened? may you have screened? may she have screened? may we have screened? may you have screened? may they have screened?	may I have been screening? may you have been screening? may she have been screening? may we have been screening? may you have been screening? may they have been screening?

Interro-negative form

Simple form	V-ing form
mayn't I screen? mayn't you screen? mayn't she screen? mayn't we screen? mayn't you screen? mayn't they screen?	mayn't I be screening? mayn't you be screening? mayn't she be screening? mayn't we be screening? mayn't you be screening? mayn't they be screening?
Perfect	V-ing perfect
mayn't I have screened? mayn't you have screened? mayn't she have screened? mayn't we have screened? mayn't you have screened? mayn't they have screened?	mayn't I have been screening? mayn't you have been screening? mayn't she have been screening? mayn't we have been screening? mayn't you have been screening? mayn't they have been screening?