should require
Regular verb: require - required- required

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should require
you should require
she should require
we should require
you should require
they should require 	I should be requiring
you should be requiring
she should be requiring
we should be requiring
you should be requiring
they should be requiring	I should have required
you should have required
she should have required
we should have required
you should have required
they should have required	I should have been requiring
you should have been requiring
she should have been requiring
we should have been requiring
you should have been requiring
they should have been requiring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not require
you should not require
she should not require
we should not require
you should not require
they should not require 	I should not be requiring
you should not be requiring
she should not be requiring
we should not be requiring
you should not be requiring
they should not be requiring	I should not have required
you should not have required
she should not have required
we should not have required
you should not have required
they should not have required	I should not have been requiring
you should not have been requiring
she should not have been requiring
we should not have been requiring
you should not have been requiring
they should not have been requiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I require?
should you require?
should she require?
should we require?
should you require?
should they require? 	should I be requiring?
should you be requiring?
should she be requiring?
should we be requiring?
should you be requiring?
should they be requiring? 	should I have required?
should you have required?
should she have required?
should we have required?
should you have required?
should they have required? 	should I have been requiring?
should you have been requiring?
should she have been requiring?
should we have been requiring?
should you have been requiring?
should they have been requiring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not require?
should you not require?
should she not require?
should we not require?
should you not require?
should they not require? 	should I not be requiring?
should you not be requiring?
should she not be requiring?
should we not be requiring?
should you not be requiring?
should they not be requiring? 	should I not have required?
should you not have required?
should she not have required?
should we not have required?
should you not have required?
should they not have required? 	should I not have been requiring?
should you not have been requiring?
should she not have been requiring?
should we not have been requiring?
should you not have been requiring?
should they not have been requiring?