English verb conjugation
MAY PURCHASE

Regular verb: purchase - purchased - purchased

Affirmation

Simple form	V-ing form
I may purchase you may purchase he may purchase we may purchase you may purchase they may purchase	I may be purchasing you may be purchasing he may be purchasing we may be purchasing you may be purchasing they may be purchasing
Perfect	V-ing perfect
I may have purchased you may have purchased he may have purchased we may have purchased you may have purchased they may have purchased	I may have been purchasing you may have been purchasing he may have been purchasing we may have been purchasing you may have been purchasing they may have been purchasing

Negation

Simple form	V-ing form
I may not purchase you may not purchase he may not purchase we may not purchase you may not purchase they may not purchase	I may not be purchasing you may not be purchasing he may not be purchasing we may not be purchasing you may not be purchasing they may not be purchasing
Perfect	V-ing perfect
I may not have purchased you may not have purchased he may not have purchased we may not have purchased you may not have purchased they may not have purchased	I may not have been purchasing you may not have been purchasing he may not have been purchasing we may not have been purchasing you may not have been purchasing they may not have been purchasing

Interrogative form

Simple form	V-ing form
may I purchase? may you purchase? may he purchase? may we purchase? may you purchase? may they purchase?	may I be purchasing? may you be purchasing? may he be purchasing? may we be purchasing? may you be purchasing? may they be purchasing?
Perfect	V-ing perfect
may I have purchased? may you have purchased? may he have purchased? may we have purchased? may you have purchased? may they have purchased?	may I have been purchasing? may you have been purchasing? may he have been purchasing? may we have been purchasing? may you have been purchasing? may they have been purchasing?

Interro-negative form

Simple form	V-ing form
may I not purchase? may you not purchase? may he not purchase? may we not purchase? may you not purchase? may they not purchase?	may I not be purchasing? may you not be purchasing? may he not be purchasing? may we not be purchasing? may you not be purchasing? may they not be purchasing?
Perfect	V-ing perfect
may I not have purchased? may you not have purchased? may he not have purchased? may we not have purchased? may you not have purchased? may they not have purchased?	may I not have been purchasing? may you not have been purchasing? may he not have been purchasing? may we not have been purchasing? may you not have been purchasing? may they not have been purchasing?