may lower
Regular verb: lower - lowered- lowered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may lower
you may lower
he may lower
we may lower
you may lower
they may lower 	I may be lowering
you may be lowering
he may be lowering
we may be lowering
you may be lowering
they may be lowering	I may have lowered
you may have lowered
he may have lowered
we may have lowered
you may have lowered
they may have lowered	I may have been lowering
you may have been lowering
he may have been lowering
we may have been lowering
you may have been lowering
they may have been lowering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't lower
you mayn't lower
he mayn't lower
we mayn't lower
you mayn't lower
they mayn't lower 	I mayn't be lowering
you mayn't be lowering
he mayn't be lowering
we mayn't be lowering
you mayn't be lowering
they mayn't be lowering	I mayn't have lowered
you mayn't have lowered
he mayn't have lowered
we mayn't have lowered
you mayn't have lowered
they mayn't have lowered	I mayn't have been lowering
you mayn't have been lowering
he mayn't have been lowering
we mayn't have been lowering
you mayn't have been lowering
they mayn't have been lowering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I lower?
may you lower?
may he lower?
may we lower?
may you lower?
may they lower? 	may I be lowering?
may you be lowering?
may he be lowering?
may we be lowering?
may you be lowering?
may they be lowering? 	may I have lowered?
may you have lowered?
may he have lowered?
may we have lowered?
may you have lowered?
may they have lowered? 	may I have been lowering?
may you have been lowering?
may he have been lowering?
may we have been lowering?
may you have been lowering?
may they have been lowering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I lower?
mayn't you lower?
mayn't he lower?
mayn't we lower?
mayn't you lower?
mayn't they lower? 	mayn't I be lowering?
mayn't you be lowering?
mayn't he be lowering?
mayn't we be lowering?
mayn't you be lowering?
mayn't they be lowering? 	mayn't I have lowered?
mayn't you have lowered?
mayn't he have lowered?
mayn't we have lowered?
mayn't you have lowered?
mayn't they have lowered? 	mayn't I have been lowering?
mayn't you have been lowering?
mayn't he have been lowering?
mayn't we have been lowering?
mayn't you have been lowering?
mayn't they have been lowering?