can cow
Verbo regular: cow - cowed- cowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot cow
you cannot cow
he cannot cow
we cannot cow
you cannot cow
they cannot cow 	I cannot be cowing
you cannot be cowing
he cannot be cowing
we cannot be cowing
you cannot be cowing
they cannot be cowing	I cannot have cowed
you cannot have cowed
he cannot have cowed
we cannot have cowed
you cannot have cowed
they cannot have cowed	I cannot have been cowing
you cannot have been cowing
he cannot have been cowing
we cannot have been cowing
you cannot have been cowing
they cannot have been cowing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not cow?
can you not cow?
can he not cow?
can we not cow?
can you not cow?
can they not cow? 	can I not be cowing?
can you not be cowing?
can he not be cowing?
can we not be cowing?
can you not be cowing?
can they not be cowing? 	can I not have cowed?
can you not have cowed?
can he not have cowed?
can we not have cowed?
can you not have cowed?
can they not have cowed? 	can I not have been cowing?
can you not have been cowing?
can he not have been cowing?
can we not have been cowing?
can you not have been cowing?
can they not have been cowing?