can cow
Regular verb: cow - cowed- cowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can cow
you can cow
he can cow
we can cow
you can cow
they can cow 	I can be cowing
you can be cowing
he can be cowing
we can be cowing
you can be cowing
they can be cowing	I can have cowed
you can have cowed
he can have cowed
we can have cowed
you can have cowed
they can have cowed	I can have been cowing
you can have been cowing
he can have been cowing
we can have been cowing
you can have been cowing
they can have been cowing	

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

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

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