may muster
Regular verb: muster - mustered- mustered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may muster
you may muster
he may muster
we may muster
you may muster
they may muster 	I may be mustering
you may be mustering
he may be mustering
we may be mustering
you may be mustering
they may be mustering	I may have mustered
you may have mustered
he may have mustered
we may have mustered
you may have mustered
they may have mustered	I may have been mustering
you may have been mustering
he may have been mustering
we may have been mustering
you may have been mustering
they may have been mustering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not muster
you may not muster
he may not muster
we may not muster
you may not muster
they may not muster 	I may not be mustering
you may not be mustering
he may not be mustering
we may not be mustering
you may not be mustering
they may not be mustering	I may not have mustered
you may not have mustered
he may not have mustered
we may not have mustered
you may not have mustered
they may not have mustered	I may not have been mustering
you may not have been mustering
he may not have been mustering
we may not have been mustering
you may not have been mustering
they may not have been mustering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I muster?
may you muster?
may he muster?
may we muster?
may you muster?
may they muster? 	may I be mustering?
may you be mustering?
may he be mustering?
may we be mustering?
may you be mustering?
may they be mustering? 	may I have mustered?
may you have mustered?
may he have mustered?
may we have mustered?
may you have mustered?
may they have mustered? 	may I have been mustering?
may you have been mustering?
may he have been mustering?
may we have been mustering?
may you have been mustering?
may they have been mustering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not muster?
may you not muster?
may he not muster?
may we not muster?
may you not muster?
may they not muster? 	may I not be mustering?
may you not be mustering?
may he not be mustering?
may we not be mustering?
may you not be mustering?
may they not be mustering? 	may I not have mustered?
may you not have mustered?
may he not have mustered?
may we not have mustered?
may you not have mustered?
may they not have mustered? 	may I not have been mustering?
may you not have been mustering?
may he not have been mustering?
may we not have been mustering?
may you not have been mustering?
may they not have been mustering?