should prefer
Regular verb: prefer - preferred- preferred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should prefer
you should prefer
she should prefer
we should prefer
you should prefer
they should prefer 	I should be preferring
you should be preferring
she should be preferring
we should be preferring
you should be preferring
they should be preferring	I should have preferred
you should have preferred
she should have preferred
we should have preferred
you should have preferred
they should have preferred	I should have been preferring
you should have been preferring
she should have been preferring
we should have been preferring
you should have been preferring
they should have been preferring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not prefer
you should not prefer
she should not prefer
we should not prefer
you should not prefer
they should not prefer 	I should not be preferring
you should not be preferring
she should not be preferring
we should not be preferring
you should not be preferring
they should not be preferring	I should not have preferred
you should not have preferred
she should not have preferred
we should not have preferred
you should not have preferred
they should not have preferred	I should not have been preferring
you should not have been preferring
she should not have been preferring
we should not have been preferring
you should not have been preferring
they should not have been preferring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I prefer?
should you prefer?
should she prefer?
should we prefer?
should you prefer?
should they prefer? 	should I be preferring?
should you be preferring?
should she be preferring?
should we be preferring?
should you be preferring?
should they be preferring? 	should I have preferred?
should you have preferred?
should she have preferred?
should we have preferred?
should you have preferred?
should they have preferred? 	should I have been preferring?
should you have been preferring?
should she have been preferring?
should we have been preferring?
should you have been preferring?
should they have been preferring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not prefer?
should you not prefer?
should she not prefer?
should we not prefer?
should you not prefer?
should they not prefer? 	should I not be preferring?
should you not be preferring?
should she not be preferring?
should we not be preferring?
should you not be preferring?
should they not be preferring? 	should I not have preferred?
should you not have preferred?
should she not have preferred?
should we not have preferred?
should you not have preferred?
should they not have preferred? 	should I not have been preferring?
should you not have been preferring?
should she not have been preferring?
should we not have been preferring?
should you not have been preferring?
should they not have been preferring?