should preweigh
Regular verb: preweigh - preweighed- preweighed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should preweigh
you should preweigh
he should preweigh
we should preweigh
you should preweigh
they should preweigh 	I should be preweighing
you should be preweighing
he should be preweighing
we should be preweighing
you should be preweighing
they should be preweighing	I should have preweighed
you should have preweighed
he should have preweighed
we should have preweighed
you should have preweighed
they should have preweighed	I should have been preweighing
you should have been preweighing
he should have been preweighing
we should have been preweighing
you should have been preweighing
they should have been preweighing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not preweigh
you should not preweigh
he should not preweigh
we should not preweigh
you should not preweigh
they should not preweigh 	I should not be preweighing
you should not be preweighing
he should not be preweighing
we should not be preweighing
you should not be preweighing
they should not be preweighing	I should not have preweighed
you should not have preweighed
he should not have preweighed
we should not have preweighed
you should not have preweighed
they should not have preweighed	I should not have been preweighing
you should not have been preweighing
he should not have been preweighing
we should not have been preweighing
you should not have been preweighing
they should not have been preweighing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I preweigh?
should you preweigh?
should he preweigh?
should we preweigh?
should you preweigh?
should they preweigh? 	should I be preweighing?
should you be preweighing?
should he be preweighing?
should we be preweighing?
should you be preweighing?
should they be preweighing? 	should I have preweighed?
should you have preweighed?
should he have preweighed?
should we have preweighed?
should you have preweighed?
should they have preweighed? 	should I have been preweighing?
should you have been preweighing?
should he have been preweighing?
should we have been preweighing?
should you have been preweighing?
should they have been preweighing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not preweigh?
should you not preweigh?
should he not preweigh?
should we not preweigh?
should you not preweigh?
should they not preweigh? 	should I not be preweighing?
should you not be preweighing?
should he not be preweighing?
should we not be preweighing?
should you not be preweighing?
should they not be preweighing? 	should I not have preweighed?
should you not have preweighed?
should he not have preweighed?
should we not have preweighed?
should you not have preweighed?
should they not have preweighed? 	should I not have been preweighing?
should you not have been preweighing?
should he not have been preweighing?
should we not have been preweighing?
should you not have been preweighing?
should they not have been preweighing?