may endeavor
Regular verb: endeavor - endeavored- endeavored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may endeavor
you may endeavor
he may endeavor
we may endeavor
you may endeavor
they may endeavor 	I may be endeavoring
you may be endeavoring
he may be endeavoring
we may be endeavoring
you may be endeavoring
they may be endeavoring	I may have endeavored
you may have endeavored
he may have endeavored
we may have endeavored
you may have endeavored
they may have endeavored	I may have been endeavoring
you may have been endeavoring
he may have been endeavoring
we may have been endeavoring
you may have been endeavoring
they may have been endeavoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't endeavor
you mayn't endeavor
he mayn't endeavor
we mayn't endeavor
you mayn't endeavor
they mayn't endeavor 	I mayn't be endeavoring
you mayn't be endeavoring
he mayn't be endeavoring
we mayn't be endeavoring
you mayn't be endeavoring
they mayn't be endeavoring	I mayn't have endeavored
you mayn't have endeavored
he mayn't have endeavored
we mayn't have endeavored
you mayn't have endeavored
they mayn't have endeavored	I mayn't have been endeavoring
you mayn't have been endeavoring
he mayn't have been endeavoring
we mayn't have been endeavoring
you mayn't have been endeavoring
they mayn't have been endeavoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I endeavor?
may you endeavor?
may he endeavor?
may we endeavor?
may you endeavor?
may they endeavor? 	may I be endeavoring?
may you be endeavoring?
may he be endeavoring?
may we be endeavoring?
may you be endeavoring?
may they be endeavoring? 	may I have endeavored?
may you have endeavored?
may he have endeavored?
may we have endeavored?
may you have endeavored?
may they have endeavored? 	may I have been endeavoring?
may you have been endeavoring?
may he have been endeavoring?
may we have been endeavoring?
may you have been endeavoring?
may they have been endeavoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I endeavor?
mayn't you endeavor?
mayn't he endeavor?
mayn't we endeavor?
mayn't you endeavor?
mayn't they endeavor? 	mayn't I be endeavoring?
mayn't you be endeavoring?
mayn't he be endeavoring?
mayn't we be endeavoring?
mayn't you be endeavoring?
mayn't they be endeavoring? 	mayn't I have endeavored?
mayn't you have endeavored?
mayn't he have endeavored?
mayn't we have endeavored?
mayn't you have endeavored?
mayn't they have endeavored? 	mayn't I have been endeavoring?
mayn't you have been endeavoring?
mayn't he have been endeavoring?
mayn't we have been endeavoring?
mayn't you have been endeavoring?
mayn't they have been endeavoring?