should trace
Regular verb: trace - traced- traced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should trace
you should trace
she should trace
we should trace
you should trace
they should trace 	I should be tracing
you should be tracing
she should be tracing
we should be tracing
you should be tracing
they should be tracing	I should have traced
you should have traced
she should have traced
we should have traced
you should have traced
they should have traced	I should have been tracing
you should have been tracing
she should have been tracing
we should have been tracing
you should have been tracing
they should have been tracing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not trace
you should not trace
she should not trace
we should not trace
you should not trace
they should not trace 	I should not be tracing
you should not be tracing
she should not be tracing
we should not be tracing
you should not be tracing
they should not be tracing	I should not have traced
you should not have traced
she should not have traced
we should not have traced
you should not have traced
they should not have traced	I should not have been tracing
you should not have been tracing
she should not have been tracing
we should not have been tracing
you should not have been tracing
they should not have been tracing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I trace?
should you trace?
should she trace?
should we trace?
should you trace?
should they trace? 	should I be tracing?
should you be tracing?
should she be tracing?
should we be tracing?
should you be tracing?
should they be tracing? 	should I have traced?
should you have traced?
should she have traced?
should we have traced?
should you have traced?
should they have traced? 	should I have been tracing?
should you have been tracing?
should she have been tracing?
should we have been tracing?
should you have been tracing?
should they have been tracing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not trace?
should you not trace?
should she not trace?
should we not trace?
should you not trace?
should they not trace? 	should I not be tracing?
should you not be tracing?
should she not be tracing?
should we not be tracing?
should you not be tracing?
should they not be tracing? 	should I not have traced?
should you not have traced?
should she not have traced?
should we not have traced?
should you not have traced?
should they not have traced? 	should I not have been tracing?
should you not have been tracing?
should she not have been tracing?
should we not have been tracing?
should you not have been tracing?
should they not have been tracing?