should assist
Regular verb: assist - assisted- assisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should assist
you should assist
he should assist
we should assist
you should assist
they should assist 	I should be assisting
you should be assisting
he should be assisting
we should be assisting
you should be assisting
they should be assisting	I should have assisted
you should have assisted
he should have assisted
we should have assisted
you should have assisted
they should have assisted	I should have been assisting
you should have been assisting
he should have been assisting
we should have been assisting
you should have been assisting
they should have been assisting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not assist
you should not assist
he should not assist
we should not assist
you should not assist
they should not assist 	I should not be assisting
you should not be assisting
he should not be assisting
we should not be assisting
you should not be assisting
they should not be assisting	I should not have assisted
you should not have assisted
he should not have assisted
we should not have assisted
you should not have assisted
they should not have assisted	I should not have been assisting
you should not have been assisting
he should not have been assisting
we should not have been assisting
you should not have been assisting
they should not have been assisting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I assist?
should you assist?
should he assist?
should we assist?
should you assist?
should they assist? 	should I be assisting?
should you be assisting?
should he be assisting?
should we be assisting?
should you be assisting?
should they be assisting? 	should I have assisted?
should you have assisted?
should he have assisted?
should we have assisted?
should you have assisted?
should they have assisted? 	should I have been assisting?
should you have been assisting?
should he have been assisting?
should we have been assisting?
should you have been assisting?
should they have been assisting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not assist?
should you not assist?
should he not assist?
should we not assist?
should you not assist?
should they not assist? 	should I not be assisting?
should you not be assisting?
should he not be assisting?
should we not be assisting?
should you not be assisting?
should they not be assisting? 	should I not have assisted?
should you not have assisted?
should he not have assisted?
should we not have assisted?
should you not have assisted?
should they not have assisted? 	should I not have been assisting?
should you not have been assisting?
should he not have been assisting?
should we not have been assisting?
should you not have been assisting?
should they not have been assisting?