may obsess
Regular verb: obsess - obsessed- obsessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may obsess
you may obsess
he may obsess
we may obsess
you may obsess
they may obsess 	I may be obsessing
you may be obsessing
he may be obsessing
we may be obsessing
you may be obsessing
they may be obsessing	I may have obsessed
you may have obsessed
he may have obsessed
we may have obsessed
you may have obsessed
they may have obsessed	I may have been obsessing
you may have been obsessing
he may have been obsessing
we may have been obsessing
you may have been obsessing
they may have been obsessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't obsess
you mayn't obsess
he mayn't obsess
we mayn't obsess
you mayn't obsess
they mayn't obsess 	I mayn't be obsessing
you mayn't be obsessing
he mayn't be obsessing
we mayn't be obsessing
you mayn't be obsessing
they mayn't be obsessing	I mayn't have obsessed
you mayn't have obsessed
he mayn't have obsessed
we mayn't have obsessed
you mayn't have obsessed
they mayn't have obsessed	I mayn't have been obsessing
you mayn't have been obsessing
he mayn't have been obsessing
we mayn't have been obsessing
you mayn't have been obsessing
they mayn't have been obsessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I obsess?
may you obsess?
may he obsess?
may we obsess?
may you obsess?
may they obsess? 	may I be obsessing?
may you be obsessing?
may he be obsessing?
may we be obsessing?
may you be obsessing?
may they be obsessing? 	may I have obsessed?
may you have obsessed?
may he have obsessed?
may we have obsessed?
may you have obsessed?
may they have obsessed? 	may I have been obsessing?
may you have been obsessing?
may he have been obsessing?
may we have been obsessing?
may you have been obsessing?
may they have been obsessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I obsess?
mayn't you obsess?
mayn't he obsess?
mayn't we obsess?
mayn't you obsess?
mayn't they obsess? 	mayn't I be obsessing?
mayn't you be obsessing?
mayn't he be obsessing?
mayn't we be obsessing?
mayn't you be obsessing?
mayn't they be obsessing? 	mayn't I have obsessed?
mayn't you have obsessed?
mayn't he have obsessed?
mayn't we have obsessed?
mayn't you have obsessed?
mayn't they have obsessed? 	mayn't I have been obsessing?
mayn't you have been obsessing?
mayn't he have been obsessing?
mayn't we have been obsessing?
mayn't you have been obsessing?
mayn't they have been obsessing?