should rat
Regular verb: rat - ratted- ratted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should rat
you should rat
he should rat
we should rat
you should rat
they should rat 	I should be ratting
you should be ratting
he should be ratting
we should be ratting
you should be ratting
they should be ratting	I should have ratted
you should have ratted
he should have ratted
we should have ratted
you should have ratted
they should have ratted	I should have been ratting
you should have been ratting
he should have been ratting
we should have been ratting
you should have been ratting
they should have been ratting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not rat
you should not rat
he should not rat
we should not rat
you should not rat
they should not rat 	I should not be ratting
you should not be ratting
he should not be ratting
we should not be ratting
you should not be ratting
they should not be ratting	I should not have ratted
you should not have ratted
he should not have ratted
we should not have ratted
you should not have ratted
they should not have ratted	I should not have been ratting
you should not have been ratting
he should not have been ratting
we should not have been ratting
you should not have been ratting
they should not have been ratting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I rat?
should you rat?
should he rat?
should we rat?
should you rat?
should they rat? 	should I be ratting?
should you be ratting?
should he be ratting?
should we be ratting?
should you be ratting?
should they be ratting? 	should I have ratted?
should you have ratted?
should he have ratted?
should we have ratted?
should you have ratted?
should they have ratted? 	should I have been ratting?
should you have been ratting?
should he have been ratting?
should we have been ratting?
should you have been ratting?
should they have been ratting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not rat?
should you not rat?
should he not rat?
should we not rat?
should you not rat?
should they not rat? 	should I not be ratting?
should you not be ratting?
should he not be ratting?
should we not be ratting?
should you not be ratting?
should they not be ratting? 	should I not have ratted?
should you not have ratted?
should he not have ratted?
should we not have ratted?
should you not have ratted?
should they not have ratted? 	should I not have been ratting?
should you not have been ratting?
should he not have been ratting?
should we not have been ratting?
should you not have been ratting?
should they not have been ratting?