English verb conjugation
MAY SUB

Regular verb: sub - subbed - subbed

Affirmation

Simple form	V-ing form
I may sub you may sub she may sub we may sub you may sub they may sub	I may be subbing you may be subbing she may be subbing we may be subbing you may be subbing they may be subbing
Perfect	V-ing perfect
I may have subbed you may have subbed she may have subbed we may have subbed you may have subbed they may have subbed	I may have been subbing you may have been subbing she may have been subbing we may have been subbing you may have been subbing they may have been subbing

Negation

Simple form	V-ing form
I mayn't sub you mayn't sub she mayn't sub we mayn't sub you mayn't sub they mayn't sub	I mayn't be subbing you mayn't be subbing she mayn't be subbing we mayn't be subbing you mayn't be subbing they mayn't be subbing
Perfect	V-ing perfect
I mayn't have subbed you mayn't have subbed she mayn't have subbed we mayn't have subbed you mayn't have subbed they mayn't have subbed	I mayn't have been subbing you mayn't have been subbing she mayn't have been subbing we mayn't have been subbing you mayn't have been subbing they mayn't have been subbing

Interrogative form

Simple form	V-ing form
may I sub? may you sub? may she sub? may we sub? may you sub? may they sub?	may I be subbing? may you be subbing? may she be subbing? may we be subbing? may you be subbing? may they be subbing?
Perfect	V-ing perfect
may I have subbed? may you have subbed? may she have subbed? may we have subbed? may you have subbed? may they have subbed?	may I have been subbing? may you have been subbing? may she have been subbing? may we have been subbing? may you have been subbing? may they have been subbing?

Interro-negative form

Simple form	V-ing form
mayn't I sub? mayn't you sub? mayn't she sub? mayn't we sub? mayn't you sub? mayn't they sub?	mayn't I be subbing? mayn't you be subbing? mayn't she be subbing? mayn't we be subbing? mayn't you be subbing? mayn't they be subbing?
Perfect	V-ing perfect
mayn't I have subbed? mayn't you have subbed? mayn't she have subbed? mayn't we have subbed? mayn't you have subbed? mayn't they have subbed?	mayn't I have been subbing? mayn't you have been subbing? mayn't she have been subbing? mayn't we have been subbing? mayn't you have been subbing? mayn't they have been subbing?