English verb conjugation
MAY BACKCROSS

Regular verb: backcross - backcrossed - backcrossed

Affirmation

Simple form	V-ing form
I may backcross you may backcross he may backcross we may backcross you may backcross they may backcross	I may be backcrossing you may be backcrossing he may be backcrossing we may be backcrossing you may be backcrossing they may be backcrossing
Perfect	V-ing perfect
I may have backcrossed you may have backcrossed he may have backcrossed we may have backcrossed you may have backcrossed they may have backcrossed	I may have been backcrossing you may have been backcrossing he may have been backcrossing we may have been backcrossing you may have been backcrossing they may have been backcrossing

Negation

Simple form	V-ing form
I may not backcross you may not backcross he may not backcross we may not backcross you may not backcross they may not backcross	I may not be backcrossing you may not be backcrossing he may not be backcrossing we may not be backcrossing you may not be backcrossing they may not be backcrossing
Perfect	V-ing perfect
I may not have backcrossed you may not have backcrossed he may not have backcrossed we may not have backcrossed you may not have backcrossed they may not have backcrossed	I may not have been backcrossing you may not have been backcrossing he may not have been backcrossing we may not have been backcrossing you may not have been backcrossing they may not have been backcrossing

Interrogative form

Simple form	V-ing form
may I backcross? may you backcross? may he backcross? may we backcross? may you backcross? may they backcross?	may I be backcrossing? may you be backcrossing? may he be backcrossing? may we be backcrossing? may you be backcrossing? may they be backcrossing?
Perfect	V-ing perfect
may I have backcrossed? may you have backcrossed? may he have backcrossed? may we have backcrossed? may you have backcrossed? may they have backcrossed?	may I have been backcrossing? may you have been backcrossing? may he have been backcrossing? may we have been backcrossing? may you have been backcrossing? may they have been backcrossing?

Interro-negative form

Simple form	V-ing form
may I not backcross? may you not backcross? may he not backcross? may we not backcross? may you not backcross? may they not backcross?	may I not be backcrossing? may you not be backcrossing? may he not be backcrossing? may we not be backcrossing? may you not be backcrossing? may they not be backcrossing?
Perfect	V-ing perfect
may I not have backcrossed? may you not have backcrossed? may he not have backcrossed? may we not have backcrossed? may you not have backcrossed? may they not have backcrossed?	may I not have been backcrossing? may you not have been backcrossing? may he not have been backcrossing? may we not have been backcrossing? may you not have been backcrossing? may they not have been backcrossing?