should design
Regular verb: design - designed- designed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should design
you should design
he should design
we should design
you should design
they should design 	I should be designing
you should be designing
he should be designing
we should be designing
you should be designing
they should be designing	I should have designed
you should have designed
he should have designed
we should have designed
you should have designed
they should have designed	I should have been designing
you should have been designing
he should have been designing
we should have been designing
you should have been designing
they should have been designing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not design
you should not design
he should not design
we should not design
you should not design
they should not design 	I should not be designing
you should not be designing
he should not be designing
we should not be designing
you should not be designing
they should not be designing	I should not have designed
you should not have designed
he should not have designed
we should not have designed
you should not have designed
they should not have designed	I should not have been designing
you should not have been designing
he should not have been designing
we should not have been designing
you should not have been designing
they should not have been designing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I design?
should you design?
should he design?
should we design?
should you design?
should they design? 	should I be designing?
should you be designing?
should he be designing?
should we be designing?
should you be designing?
should they be designing? 	should I have designed?
should you have designed?
should he have designed?
should we have designed?
should you have designed?
should they have designed? 	should I have been designing?
should you have been designing?
should he have been designing?
should we have been designing?
should you have been designing?
should they have been designing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not design?
should you not design?
should he not design?
should we not design?
should you not design?
should they not design? 	should I not be designing?
should you not be designing?
should he not be designing?
should we not be designing?
should you not be designing?
should they not be designing? 	should I not have designed?
should you not have designed?
should he not have designed?
should we not have designed?
should you not have designed?
should they not have designed? 	should I not have been designing?
should you not have been designing?
should he not have been designing?
should we not have been designing?
should you not have been designing?
should they not have been designing?