should trace
Regular verb: trace - traced- traced

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't trace
you shouldn't trace
she shouldn't trace
we shouldn't trace
you shouldn't trace
they shouldn't trace 	I shouldn't be tracing
you shouldn't be tracing
she shouldn't be tracing
we shouldn't be tracing
you shouldn't be tracing
they shouldn't be tracing	I shouldn't have traced
you shouldn't have traced
she shouldn't have traced
we shouldn't have traced
you shouldn't have traced
they shouldn't have traced	I shouldn't have been tracing
you shouldn't have been tracing
she shouldn't have been tracing
we shouldn't have been tracing
you shouldn't have been tracing
they shouldn't 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 	
shouldn't I trace?
shouldn't you trace?
shouldn't she trace?
shouldn't we trace?
shouldn't you trace?
shouldn't they trace? 	shouldn't I be tracing?
shouldn't you be tracing?
shouldn't she be tracing?
shouldn't we be tracing?
shouldn't you be tracing?
shouldn't they be tracing? 	shouldn't I have traced?
shouldn't you have traced?
shouldn't she have traced?
shouldn't we have traced?
shouldn't you have traced?
shouldn't they have traced? 	shouldn't I have been tracing?
shouldn't you have been tracing?
shouldn't she have been tracing?
shouldn't we have been tracing?
shouldn't you have been tracing?
shouldn't they have been tracing?