English verb conjugation
MAY EXTEND

Regular verb: extend - extended - extended

Affirmation

Simple form	V-ing form
I may extend you may extend he may extend we may extend you may extend they may extend	I may be extending you may be extending he may be extending we may be extending you may be extending they may be extending
Perfect	V-ing perfect
I may have extended you may have extended he may have extended we may have extended you may have extended they may have extended	I may have been extending you may have been extending he may have been extending we may have been extending you may have been extending they may have been extending

Negation

Simple form	V-ing form
I mayn't extend you mayn't extend he mayn't extend we mayn't extend you mayn't extend they mayn't extend	I mayn't be extending you mayn't be extending he mayn't be extending we mayn't be extending you mayn't be extending they mayn't be extending
Perfect	V-ing perfect
I mayn't have extended you mayn't have extended he mayn't have extended we mayn't have extended you mayn't have extended they mayn't have extended	I mayn't have been extending you mayn't have been extending he mayn't have been extending we mayn't have been extending you mayn't have been extending they mayn't have been extending

Interrogative form

Simple form	V-ing form
may I extend? may you extend? may he extend? may we extend? may you extend? may they extend?	may I be extending? may you be extending? may he be extending? may we be extending? may you be extending? may they be extending?
Perfect	V-ing perfect
may I have extended? may you have extended? may he have extended? may we have extended? may you have extended? may they have extended?	may I have been extending? may you have been extending? may he have been extending? may we have been extending? may you have been extending? may they have been extending?

Interro-negative form

Simple form	V-ing form
mayn't I extend? mayn't you extend? mayn't he extend? mayn't we extend? mayn't you extend? mayn't they extend?	mayn't I be extending? mayn't you be extending? mayn't he be extending? mayn't we be extending? mayn't you be extending? mayn't they be extending?
Perfect	V-ing perfect
mayn't I have extended? mayn't you have extended? mayn't he have extended? mayn't we have extended? mayn't you have extended? mayn't they have extended?	mayn't I have been extending? mayn't you have been extending? mayn't he have been extending? mayn't we have been extending? mayn't you have been extending? mayn't they have been extending?