can clack
Verbo regular: clack - clacked- clacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can clack
you can clack
he can clack
we can clack
you can clack
they can clack 	I can be clacking
you can be clacking
he can be clacking
we can be clacking
you can be clacking
they can be clacking	I can have clacked
you can have clacked
he can have clacked
we can have clacked
you can have clacked
they can have clacked	I can have been clacking
you can have been clacking
he can have been clacking
we can have been clacking
you can have been clacking
they can have been clacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't clack
you can't clack
he can't clack
we can't clack
you can't clack
they can't clack 	I can't be clacking
you can't be clacking
he can't be clacking
we can't be clacking
you can't be clacking
they can't be clacking	I can't have clacked
you can't have clacked
he can't have clacked
we can't have clacked
you can't have clacked
they can't have clacked	I can't have been clacking
you can't have been clacking
he can't have been clacking
we can't have been clacking
you can't have been clacking
they can't have been clacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I clack?
can you clack?
can he clack?
can we clack?
can you clack?
can they clack? 	can I be clacking?
can you be clacking?
can he be clacking?
can we be clacking?
can you be clacking?
can they be clacking? 	can I have clacked?
can you have clacked?
can he have clacked?
can we have clacked?
can you have clacked?
can they have clacked? 	can I have been clacking?
can you have been clacking?
can he have been clacking?
can we have been clacking?
can you have been clacking?
can they have been clacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I clack?
can't you clack?
can't he clack?
can't we clack?
can't you clack?
can't they clack? 	can't I be clacking?
can't you be clacking?
can't he be clacking?
can't we be clacking?
can't you be clacking?
can't they be clacking? 	can't I have clacked?
can't you have clacked?
can't he have clacked?
can't we have clacked?
can't you have clacked?
can't they have clacked? 	can't I have been clacking?
can't you have been clacking?
can't he have been clacking?
can't we have been clacking?
can't you have been clacking?
can't they have been clacking?