should rumble
Regular verb: rumble - rumbled- rumbled

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

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

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

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