should cow
Regular verb: cow - cowed- cowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd cow
you'd cow
he'd cow
we'd cow
you'd cow
they'd cow 	I'd be cowing
you'd be cowing
he'd be cowing
we'd be cowing
you'd be cowing
they'd be cowing	I should've cowed
you should've cowed
he should've cowed
we should've cowed
you should've cowed
they should've cowed	I should've been cowing
you should've been cowing
he should've been cowing
we should've been cowing
you should've been cowing
they should've been cowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't cow
you shouldn't cow
he shouldn't cow
we shouldn't cow
you shouldn't cow
they shouldn't cow 	I shouldn't be cowing
you shouldn't be cowing
he shouldn't be cowing
we shouldn't be cowing
you shouldn't be cowing
they shouldn't be cowing	I shouldn't have cowed
you shouldn't have cowed
he shouldn't have cowed
we shouldn't have cowed
you shouldn't have cowed
they shouldn't have cowed	I shouldn't have been cowing
you shouldn't have been cowing
he shouldn't have been cowing
we shouldn't have been cowing
you shouldn't have been cowing
they shouldn't have been cowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I cow?
should you cow?
should he cow?
should we cow?
should you cow?
should they cow? 	should I be cowing?
should you be cowing?
should he be cowing?
should we be cowing?
should you be cowing?
should they be cowing? 	should I have cowed?
should you have cowed?
should he have cowed?
should we have cowed?
should you have cowed?
should they have cowed? 	should I have been cowing?
should you have been cowing?
should he have been cowing?
should we have been cowing?
should you have been cowing?
should they have been cowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I cow?
shouldn't you cow?
shouldn't he cow?
shouldn't we cow?
shouldn't you cow?
shouldn't they cow? 	shouldn't I be cowing?
shouldn't you be cowing?
shouldn't he be cowing?
shouldn't we be cowing?
shouldn't you be cowing?
shouldn't they be cowing? 	shouldn't I have cowed?
shouldn't you have cowed?
shouldn't he have cowed?
shouldn't we have cowed?
shouldn't you have cowed?
shouldn't they have cowed? 	shouldn't I have been cowing?
shouldn't you have been cowing?
shouldn't he have been cowing?
shouldn't we have been cowing?
shouldn't you have been cowing?
shouldn't they have been cowing?