should ko
Regular verb: ko - koed- koed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should ko
you should ko
he should ko
we should ko
you should ko
they should ko 	I should be koing
you should be koing
he should be koing
we should be koing
you should be koing
they should be koing	I should have koed
you should have koed
he should have koed
we should have koed
you should have koed
they should have koed	I should have been koing
you should have been koing
he should have been koing
we should have been koing
you should have been koing
they should have been koing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not ko
you should not ko
he should not ko
we should not ko
you should not ko
they should not ko 	I should not be koing
you should not be koing
he should not be koing
we should not be koing
you should not be koing
they should not be koing	I should not have koed
you should not have koed
he should not have koed
we should not have koed
you should not have koed
they should not have koed	I should not have been koing
you should not have been koing
he should not have been koing
we should not have been koing
you should not have been koing
they should not have been koing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I ko?
should you ko?
should he ko?
should we ko?
should you ko?
should they ko? 	should I be koing?
should you be koing?
should he be koing?
should we be koing?
should you be koing?
should they be koing? 	should I have koed?
should you have koed?
should he have koed?
should we have koed?
should you have koed?
should they have koed? 	should I have been koing?
should you have been koing?
should he have been koing?
should we have been koing?
should you have been koing?
should they have been koing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not ko?
should you not ko?
should he not ko?
should we not ko?
should you not ko?
should they not ko? 	should I not be koing?
should you not be koing?
should he not be koing?
should we not be koing?
should you not be koing?
should they not be koing? 	should I not have koed?
should you not have koed?
should he not have koed?
should we not have koed?
should you not have koed?
should they not have koed? 	should I not have been koing?
should you not have been koing?
should he not have been koing?
should we not have been koing?
should you not have been koing?
should they not have been koing?