should clump
Regular verb: clump - clumped- clumped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd clump
you'd clump
she'd clump
we'd clump
you'd clump
they'd clump 	I'd be clumping
you'd be clumping
she'd be clumping
we'd be clumping
you'd be clumping
they'd be clumping	I should've clumped
you should've clumped
she should've clumped
we should've clumped
you should've clumped
they should've clumped	I should've been clumping
you should've been clumping
she should've been clumping
we should've been clumping
you should've been clumping
they should've been clumping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't clump
you shouldn't clump
she shouldn't clump
we shouldn't clump
you shouldn't clump
they shouldn't clump 	I shouldn't be clumping
you shouldn't be clumping
she shouldn't be clumping
we shouldn't be clumping
you shouldn't be clumping
they shouldn't be clumping	I shouldn't have clumped
you shouldn't have clumped
she shouldn't have clumped
we shouldn't have clumped
you shouldn't have clumped
they shouldn't have clumped	I shouldn't have been clumping
you shouldn't have been clumping
she shouldn't have been clumping
we shouldn't have been clumping
you shouldn't have been clumping
they shouldn't have been clumping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I clump?
should you clump?
should she clump?
should we clump?
should you clump?
should they clump? 	should I be clumping?
should you be clumping?
should she be clumping?
should we be clumping?
should you be clumping?
should they be clumping? 	should I have clumped?
should you have clumped?
should she have clumped?
should we have clumped?
should you have clumped?
should they have clumped? 	should I have been clumping?
should you have been clumping?
should she have been clumping?
should we have been clumping?
should you have been clumping?
should they have been clumping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I clump?
shouldn't you clump?
shouldn't she clump?
shouldn't we clump?
shouldn't you clump?
shouldn't they clump? 	shouldn't I be clumping?
shouldn't you be clumping?
shouldn't she be clumping?
shouldn't we be clumping?
shouldn't you be clumping?
shouldn't they be clumping? 	shouldn't I have clumped?
shouldn't you have clumped?
shouldn't she have clumped?
shouldn't we have clumped?
shouldn't you have clumped?
shouldn't they have clumped? 	shouldn't I have been clumping?
shouldn't you have been clumping?
shouldn't she have been clumping?
shouldn't we have been clumping?
shouldn't you have been clumping?
shouldn't they have been clumping?