may backcross
Regular verb: backcross - backcrossed- backcrossed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?