English verb conjugation
MAY START

Regular verb: start - started - started

Affirmation

Simple form	V-ing form
I may start you may start he may start we may start you may start they may start	I may be starting you may be starting he may be starting we may be starting you may be starting they may be starting
Perfect	V-ing perfect
I may have started you may have started he may have started we may have started you may have started they may have started	I may have been starting you may have been starting he may have been starting we may have been starting you may have been starting they may have been starting

Negation

Simple form	V-ing form
I may not start you may not start he may not start we may not start you may not start they may not start	I may not be starting you may not be starting he may not be starting we may not be starting you may not be starting they may not be starting
Perfect	V-ing perfect
I may not have started you may not have started he may not have started we may not have started you may not have started they may not have started	I may not have been starting you may not have been starting he may not have been starting we may not have been starting you may not have been starting they may not have been starting

Interrogative form

Simple form	V-ing form
may I start? may you start? may he start? may we start? may you start? may they start?	may I be starting? may you be starting? may he be starting? may we be starting? may you be starting? may they be starting?
Perfect	V-ing perfect
may I have started? may you have started? may he have started? may we have started? may you have started? may they have started?	may I have been starting? may you have been starting? may he have been starting? may we have been starting? may you have been starting? may they have been starting?

Interro-negative form

Simple form	V-ing form
may I not start? may you not start? may he not start? may we not start? may you not start? may they not start?	may I not be starting? may you not be starting? may he not be starting? may we not be starting? may you not be starting? may they not be starting?
Perfect	V-ing perfect
may I not have started? may you not have started? may he not have started? may we not have started? may you not have started? may they not have started?	may I not have been starting? may you not have been starting? may he not have been starting? may we not have been starting? may you not have been starting? may they not have been starting?