can marble
Verbo regular: marble - marbled- marbled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can marble
you can marble
she can marble
we can marble
you can marble
they can marble 	I can be marbling
you can be marbling
she can be marbling
we can be marbling
you can be marbling
they can be marbling	I can have marbled
you can have marbled
she can have marbled
we can have marbled
you can have marbled
they can have marbled	I can have been marbling
you can have been marbling
she can have been marbling
we can have been marbling
you can have been marbling
they can have been marbling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot marble
you cannot marble
she cannot marble
we cannot marble
you cannot marble
they cannot marble 	I cannot be marbling
you cannot be marbling
she cannot be marbling
we cannot be marbling
you cannot be marbling
they cannot be marbling	I cannot have marbled
you cannot have marbled
she cannot have marbled
we cannot have marbled
you cannot have marbled
they cannot have marbled	I cannot have been marbling
you cannot have been marbling
she cannot have been marbling
we cannot have been marbling
you cannot have been marbling
they cannot have been marbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I marble?
can you marble?
can she marble?
can we marble?
can you marble?
can they marble? 	can I be marbling?
can you be marbling?
can she be marbling?
can we be marbling?
can you be marbling?
can they be marbling? 	can I have marbled?
can you have marbled?
can she have marbled?
can we have marbled?
can you have marbled?
can they have marbled? 	can I have been marbling?
can you have been marbling?
can she have been marbling?
can we have been marbling?
can you have been marbling?
can they have been marbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not marble?
can you not marble?
can she not marble?
can we not marble?
can you not marble?
can they not marble? 	can I not be marbling?
can you not be marbling?
can she not be marbling?
can we not be marbling?
can you not be marbling?
can they not be marbling? 	can I not have marbled?
can you not have marbled?
can she not have marbled?
can we not have marbled?
can you not have marbled?
can they not have marbled? 	can I not have been marbling?
can you not have been marbling?
can she not have been marbling?
can we not have been marbling?
can you not have been marbling?
can they not have been marbling?