may obsess
Regular verb: obsess - obsessed- obsessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may obsess
you may obsess
she may obsess
we may obsess
you may obsess
they may obsess 	I may be obsessing
you may be obsessing
she may be obsessing
we may be obsessing
you may be obsessing
they may be obsessing	I may have obsessed
you may have obsessed
she 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
she 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
she 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
she 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
she 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
she 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 she obsess?
may we obsess?
may you obsess?
may they obsess? 	may I be obsessing?
may you be obsessing?
may she be obsessing?
may we be obsessing?
may you be obsessing?
may they be obsessing? 	may I have obsessed?
may you have obsessed?
may she 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 she 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 she 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 she 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 she 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 she have been obsessing?
mayn't we have been obsessing?
mayn't you have been obsessing?
mayn't they have been obsessing?