may harvest
Regular verb: harvest - harvested- harvested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may harvest
you may harvest
he may harvest
we may harvest
you may harvest
they may harvest 	I may be harvesting
you may be harvesting
he may be harvesting
we may be harvesting
you may be harvesting
they may be harvesting	I may have harvested
you may have harvested
he may have harvested
we may have harvested
you may have harvested
they may have harvested	I may have been harvesting
you may have been harvesting
he may have been harvesting
we may have been harvesting
you may have been harvesting
they may have been harvesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't harvest
you mayn't harvest
he mayn't harvest
we mayn't harvest
you mayn't harvest
they mayn't harvest 	I mayn't be harvesting
you mayn't be harvesting
he mayn't be harvesting
we mayn't be harvesting
you mayn't be harvesting
they mayn't be harvesting	I mayn't have harvested
you mayn't have harvested
he mayn't have harvested
we mayn't have harvested
you mayn't have harvested
they mayn't have harvested	I mayn't have been harvesting
you mayn't have been harvesting
he mayn't have been harvesting
we mayn't have been harvesting
you mayn't have been harvesting
they mayn't have been harvesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I harvest?
may you harvest?
may he harvest?
may we harvest?
may you harvest?
may they harvest? 	may I be harvesting?
may you be harvesting?
may he be harvesting?
may we be harvesting?
may you be harvesting?
may they be harvesting? 	may I have harvested?
may you have harvested?
may he have harvested?
may we have harvested?
may you have harvested?
may they have harvested? 	may I have been harvesting?
may you have been harvesting?
may he have been harvesting?
may we have been harvesting?
may you have been harvesting?
may they have been harvesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I harvest?
mayn't you harvest?
mayn't he harvest?
mayn't we harvest?
mayn't you harvest?
mayn't they harvest? 	mayn't I be harvesting?
mayn't you be harvesting?
mayn't he be harvesting?
mayn't we be harvesting?
mayn't you be harvesting?
mayn't they be harvesting? 	mayn't I have harvested?
mayn't you have harvested?
mayn't he have harvested?
mayn't we have harvested?
mayn't you have harvested?
mayn't they have harvested? 	mayn't I have been harvesting?
mayn't you have been harvesting?
mayn't he have been harvesting?
mayn't we have been harvesting?
mayn't you have been harvesting?
mayn't they have been harvesting?