should fight
Irregular verb: fight - fought- fought

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd fight
you'd fight
he'd fight
we'd fight
you'd fight
they'd fight 	I'd be fighting
you'd be fighting
he'd be fighting
we'd be fighting
you'd be fighting
they'd be fighting	I should've fought
you should've fought
he should've fought
we should've fought
you should've fought
they should've fought	I should've been fighting
you should've been fighting
he should've been fighting
we should've been fighting
you should've been fighting
they should've been fighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't fight
you shouldn't fight
he shouldn't fight
we shouldn't fight
you shouldn't fight
they shouldn't fight 	I shouldn't be fighting
you shouldn't be fighting
he shouldn't be fighting
we shouldn't be fighting
you shouldn't be fighting
they shouldn't be fighting	I shouldn't have fought
you shouldn't have fought
he shouldn't have fought
we shouldn't have fought
you shouldn't have fought
they shouldn't have fought	I shouldn't have been fighting
you shouldn't have been fighting
he shouldn't have been fighting
we shouldn't have been fighting
you shouldn't have been fighting
they shouldn't have been fighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I fight?
should you fight?
should he fight?
should we fight?
should you fight?
should they fight? 	should I be fighting?
should you be fighting?
should he be fighting?
should we be fighting?
should you be fighting?
should they be fighting? 	should I have fought?
should you have fought?
should he have fought?
should we have fought?
should you have fought?
should they have fought? 	should I have been fighting?
should you have been fighting?
should he have been fighting?
should we have been fighting?
should you have been fighting?
should they have been fighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I fight?
shouldn't you fight?
shouldn't he fight?
shouldn't we fight?
shouldn't you fight?
shouldn't they fight? 	shouldn't I be fighting?
shouldn't you be fighting?
shouldn't he be fighting?
shouldn't we be fighting?
shouldn't you be fighting?
shouldn't they be fighting? 	shouldn't I have fought?
shouldn't you have fought?
shouldn't he have fought?
shouldn't we have fought?
shouldn't you have fought?
shouldn't they have fought? 	shouldn't I have been fighting?
shouldn't you have been fighting?
shouldn't he have been fighting?
shouldn't we have been fighting?
shouldn't you have been fighting?
shouldn't they have been fighting?