should curve
Regular verb: curve - curved- curved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should curve
you should curve
he should curve
we should curve
you should curve
they should curve 	I should be curving
you should be curving
he should be curving
we should be curving
you should be curving
they should be curving	I should have curved
you should have curved
he should have curved
we should have curved
you should have curved
they should have curved	I should have been curving
you should have been curving
he should have been curving
we should have been curving
you should have been curving
they should have been curving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not curve
you should not curve
he should not curve
we should not curve
you should not curve
they should not curve 	I should not be curving
you should not be curving
he should not be curving
we should not be curving
you should not be curving
they should not be curving	I should not have curved
you should not have curved
he should not have curved
we should not have curved
you should not have curved
they should not have curved	I should not have been curving
you should not have been curving
he should not have been curving
we should not have been curving
you should not have been curving
they should not have been curving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I curve?
should you curve?
should he curve?
should we curve?
should you curve?
should they curve? 	should I be curving?
should you be curving?
should he be curving?
should we be curving?
should you be curving?
should they be curving? 	should I have curved?
should you have curved?
should he have curved?
should we have curved?
should you have curved?
should they have curved? 	should I have been curving?
should you have been curving?
should he have been curving?
should we have been curving?
should you have been curving?
should they have been curving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not curve?
should you not curve?
should he not curve?
should we not curve?
should you not curve?
should they not curve? 	should I not be curving?
should you not be curving?
should he not be curving?
should we not be curving?
should you not be curving?
should they not be curving? 	should I not have curved?
should you not have curved?
should he not have curved?
should we not have curved?
should you not have curved?
should they not have curved? 	should I not have been curving?
should you not have been curving?
should he not have been curving?
should we not have been curving?
should you not have been curving?
should they not have been curving?