can rumble
Regular verb: rumble - rumbled- rumbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can rumble
you can rumble
he can rumble
we can rumble
you can rumble
they can rumble 	I can be rumbling
you can be rumbling
he can be rumbling
we can be rumbling
you can be rumbling
they can be rumbling	I can have rumbled
you can have rumbled
he can have rumbled
we can have rumbled
you can have rumbled
they can have rumbled	I can have been rumbling
you can have been rumbling
he can have been rumbling
we can have been rumbling
you can have been rumbling
they can have been rumbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot rumble
you cannot rumble
he cannot rumble
we cannot rumble
you cannot rumble
they cannot rumble 	I cannot be rumbling
you cannot be rumbling
he cannot be rumbling
we cannot be rumbling
you cannot be rumbling
they cannot be rumbling	I cannot have rumbled
you cannot have rumbled
he cannot have rumbled
we cannot have rumbled
you cannot have rumbled
they cannot have rumbled	I cannot have been rumbling
you cannot have been rumbling
he cannot have been rumbling
we cannot have been rumbling
you cannot have been rumbling
they cannot have been rumbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I rumble?
can you rumble?
can he rumble?
can we rumble?
can you rumble?
can they rumble? 	can I be rumbling?
can you be rumbling?
can he be rumbling?
can we be rumbling?
can you be rumbling?
can they be rumbling? 	can I have rumbled?
can you have rumbled?
can he have rumbled?
can we have rumbled?
can you have rumbled?
can they have rumbled? 	can I have been rumbling?
can you have been rumbling?
can he have been rumbling?
can we have been rumbling?
can you have been rumbling?
can they have been rumbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not rumble?
can you not rumble?
can he not rumble?
can we not rumble?
can you not rumble?
can they not rumble? 	can I not be rumbling?
can you not be rumbling?
can he not be rumbling?
can we not be rumbling?
can you not be rumbling?
can they not be rumbling? 	can I not have rumbled?
can you not have rumbled?
can he not have rumbled?
can we not have rumbled?
can you not have rumbled?
can they not have rumbled? 	can I not have been rumbling?
can you not have been rumbling?
can he not have been rumbling?
can we not have been rumbling?
can you not have been rumbling?
can they not have been rumbling?