English verb conjugation
MAY RETRIEVE

Regular verb: retrieve - retrieved - retrieved

Affirmation

Simple form	V-ing form
I may retrieve you may retrieve he may retrieve we may retrieve you may retrieve they may retrieve	I may be retrieving you may be retrieving he may be retrieving we may be retrieving you may be retrieving they may be retrieving
Perfect	V-ing perfect
I may have retrieved you may have retrieved he may have retrieved we may have retrieved you may have retrieved they may have retrieved	I may have been retrieving you may have been retrieving he may have been retrieving we may have been retrieving you may have been retrieving they may have been retrieving

Negation

Simple form	V-ing form
I may not retrieve you may not retrieve he may not retrieve we may not retrieve you may not retrieve they may not retrieve	I may not be retrieving you may not be retrieving he may not be retrieving we may not be retrieving you may not be retrieving they may not be retrieving
Perfect	V-ing perfect
I may not have retrieved you may not have retrieved he may not have retrieved we may not have retrieved you may not have retrieved they may not have retrieved	I may not have been retrieving you may not have been retrieving he may not have been retrieving we may not have been retrieving you may not have been retrieving they may not have been retrieving

Interrogative form

Simple form	V-ing form
may I retrieve? may you retrieve? may he retrieve? may we retrieve? may you retrieve? may they retrieve?	may I be retrieving? may you be retrieving? may he be retrieving? may we be retrieving? may you be retrieving? may they be retrieving?
Perfect	V-ing perfect
may I have retrieved? may you have retrieved? may he have retrieved? may we have retrieved? may you have retrieved? may they have retrieved?	may I have been retrieving? may you have been retrieving? may he have been retrieving? may we have been retrieving? may you have been retrieving? may they have been retrieving?

Interro-negative form

Simple form	V-ing form
may I not retrieve? may you not retrieve? may he not retrieve? may we not retrieve? may you not retrieve? may they not retrieve?	may I not be retrieving? may you not be retrieving? may he not be retrieving? may we not be retrieving? may you not be retrieving? may they not be retrieving?
Perfect	V-ing perfect
may I not have retrieved? may you not have retrieved? may he not have retrieved? may we not have retrieved? may you not have retrieved? may they not have retrieved?	may I not have been retrieving? may you not have been retrieving? may he not have been retrieving? may we not have been retrieving? may you not have been retrieving? may they not have been retrieving?