should rumble
Regular verb: rumble - rumbled- rumbled

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't rumble
you shouldn't rumble
he shouldn't rumble
we shouldn't rumble
you shouldn't rumble
they shouldn't rumble 	I shouldn't be rumbling
you shouldn't be rumbling
he shouldn't be rumbling
we shouldn't be rumbling
you shouldn't be rumbling
they shouldn't be rumbling	I shouldn't have rumbled
you shouldn't have rumbled
he shouldn't have rumbled
we shouldn't have rumbled
you shouldn't have rumbled
they shouldn't have rumbled	I shouldn't have been rumbling
you shouldn't have been rumbling
he shouldn't have been rumbling
we shouldn't have been rumbling
you shouldn't have been rumbling
they shouldn't 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 	
shouldn't I rumble?
shouldn't you rumble?
shouldn't he rumble?
shouldn't we rumble?
shouldn't you rumble?
shouldn't they rumble? 	shouldn't I be rumbling?
shouldn't you be rumbling?
shouldn't he be rumbling?
shouldn't we be rumbling?
shouldn't you be rumbling?
shouldn't they be rumbling? 	shouldn't I have rumbled?
shouldn't you have rumbled?
shouldn't he have rumbled?
shouldn't we have rumbled?
shouldn't you have rumbled?
shouldn't they have rumbled? 	shouldn't I have been rumbling?
shouldn't you have been rumbling?
shouldn't he have been rumbling?
shouldn't we have been rumbling?
shouldn't you have been rumbling?
shouldn't they have been rumbling?