can marble
Regular verb: marble - marbled- marbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can marble
you can marble
he can marble
we can marble
you can marble
they can marble 	I can be marbling
you can be marbling
he can be marbling
we can be marbling
you can be marbling
they can be marbling	I can have marbled
you can have marbled
he 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
he can have been marbling
we can have been marbling
you can have been marbling
they can have been marbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot marble
you cannot marble
he cannot marble
we cannot marble
you cannot marble
they cannot marble 	I cannot be marbling
you cannot be marbling
he cannot be marbling
we cannot be marbling
you cannot be marbling
they cannot be marbling	I cannot have marbled
you cannot have marbled
he 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
he cannot have been marbling
we cannot have been marbling
you cannot have been marbling
they cannot have been marbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I marble?
can you marble?
can he marble?
can we marble?
can you marble?
can they marble? 	can I be marbling?
can you be marbling?
can he be marbling?
can we be marbling?
can you be marbling?
can they be marbling? 	can I have marbled?
can you have marbled?
can he 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 he have been marbling?
can we have been marbling?
can you have been marbling?
can they have been marbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not marble?
can you not marble?
can he 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 he 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 he 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 he not have been marbling?
can we not have been marbling?
can you not have been marbling?
can they not have been marbling?