shall obsess
Regular verb: obsess - obsessed- obsessed

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

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

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

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