should cube
Regular verb: cube - cubed- cubed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd cube
you'd cube
she'd cube
we'd cube
you'd cube
they'd cube 	I'd be cubing
you'd be cubing
she'd be cubing
we'd be cubing
you'd be cubing
they'd be cubing	I should've cubed
you should've cubed
she should've cubed
we should've cubed
you should've cubed
they should've cubed	I should've been cubing
you should've been cubing
she should've been cubing
we should've been cubing
you should've been cubing
they should've been cubing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't cube
you shouldn't cube
she shouldn't cube
we shouldn't cube
you shouldn't cube
they shouldn't cube 	I shouldn't be cubing
you shouldn't be cubing
she shouldn't be cubing
we shouldn't be cubing
you shouldn't be cubing
they shouldn't be cubing	I shouldn't have cubed
you shouldn't have cubed
she shouldn't have cubed
we shouldn't have cubed
you shouldn't have cubed
they shouldn't have cubed	I shouldn't have been cubing
you shouldn't have been cubing
she shouldn't have been cubing
we shouldn't have been cubing
you shouldn't have been cubing
they shouldn't have been cubing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I cube?
should you cube?
should she cube?
should we cube?
should you cube?
should they cube? 	should I be cubing?
should you be cubing?
should she be cubing?
should we be cubing?
should you be cubing?
should they be cubing? 	should I have cubed?
should you have cubed?
should she have cubed?
should we have cubed?
should you have cubed?
should they have cubed? 	should I have been cubing?
should you have been cubing?
should she have been cubing?
should we have been cubing?
should you have been cubing?
should they have been cubing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I cube?
shouldn't you cube?
shouldn't she cube?
shouldn't we cube?
shouldn't you cube?
shouldn't they cube? 	shouldn't I be cubing?
shouldn't you be cubing?
shouldn't she be cubing?
shouldn't we be cubing?
shouldn't you be cubing?
shouldn't they be cubing? 	shouldn't I have cubed?
shouldn't you have cubed?
shouldn't she have cubed?
shouldn't we have cubed?
shouldn't you have cubed?
shouldn't they have cubed? 	shouldn't I have been cubing?
shouldn't you have been cubing?
shouldn't she have been cubing?
shouldn't we have been cubing?
shouldn't you have been cubing?
shouldn't they have been cubing?