may backcheck
Regular verb: backcheck - backchecked- backchecked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may backcheck
you may backcheck
he may backcheck
we may backcheck
you may backcheck
they may backcheck 	I may be backchecking
you may be backchecking
he may be backchecking
we may be backchecking
you may be backchecking
they may be backchecking	I may have backchecked
you may have backchecked
he may have backchecked
we may have backchecked
you may have backchecked
they may have backchecked	I may have been backchecking
you may have been backchecking
he may have been backchecking
we may have been backchecking
you may have been backchecking
they may have been backchecking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not backcheck
you may not backcheck
he may not backcheck
we may not backcheck
you may not backcheck
they may not backcheck 	I may not be backchecking
you may not be backchecking
he may not be backchecking
we may not be backchecking
you may not be backchecking
they may not be backchecking	I may not have backchecked
you may not have backchecked
he may not have backchecked
we may not have backchecked
you may not have backchecked
they may not have backchecked	I may not have been backchecking
you may not have been backchecking
he may not have been backchecking
we may not have been backchecking
you may not have been backchecking
they may not have been backchecking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I backcheck?
may you backcheck?
may he backcheck?
may we backcheck?
may you backcheck?
may they backcheck? 	may I be backchecking?
may you be backchecking?
may he be backchecking?
may we be backchecking?
may you be backchecking?
may they be backchecking? 	may I have backchecked?
may you have backchecked?
may he have backchecked?
may we have backchecked?
may you have backchecked?
may they have backchecked? 	may I have been backchecking?
may you have been backchecking?
may he have been backchecking?
may we have been backchecking?
may you have been backchecking?
may they have been backchecking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not backcheck?
may you not backcheck?
may he not backcheck?
may we not backcheck?
may you not backcheck?
may they not backcheck? 	may I not be backchecking?
may you not be backchecking?
may he not be backchecking?
may we not be backchecking?
may you not be backchecking?
may they not be backchecking? 	may I not have backchecked?
may you not have backchecked?
may he not have backchecked?
may we not have backchecked?
may you not have backchecked?
may they not have backchecked? 	may I not have been backchecking?
may you not have been backchecking?
may he not have been backchecking?
may we not have been backchecking?
may you not have been backchecking?
may they not have been backchecking?