should cube
Regular verb: cube - cubed- cubed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should cube
you should cube
he should cube
we should cube
you should cube
they should cube 	I should be cubing
you should be cubing
he should be cubing
we should be cubing
you should be cubing
they should be cubing	I should have cubed
you should have cubed
he should have cubed
we should have cubed
you should have cubed
they should have cubed	I should have been cubing
you should have been cubing
he should have been cubing
we should have been cubing
you should have been cubing
they should have been cubing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not cube
you should not cube
he should not cube
we should not cube
you should not cube
they should not cube 	I should not be cubing
you should not be cubing
he should not be cubing
we should not be cubing
you should not be cubing
they should not be cubing	I should not have cubed
you should not have cubed
he should not have cubed
we should not have cubed
you should not have cubed
they should not have cubed	I should not have been cubing
you should not have been cubing
he should not have been cubing
we should not have been cubing
you should not have been cubing
they should not have been cubing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I cube?
should you cube?
should he cube?
should we cube?
should you cube?
should they cube? 	should I be cubing?
should you be cubing?
should he be cubing?
should we be cubing?
should you be cubing?
should they be cubing? 	should I have cubed?
should you have cubed?
should he 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 he 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 	
should I not cube?
should you not cube?
should he not cube?
should we not cube?
should you not cube?
should they not cube? 	should I not be cubing?
should you not be cubing?
should he not be cubing?
should we not be cubing?
should you not be cubing?
should they not be cubing? 	should I not have cubed?
should you not have cubed?
should he not have cubed?
should we not have cubed?
should you not have cubed?
should they not have cubed? 	should I not have been cubing?
should you not have been cubing?
should he not have been cubing?
should we not have been cubing?
should you not have been cubing?
should they not have been cubing?