should retrace
Regular verb: retrace - retraced- retraced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd retrace
you'd retrace
she'd retrace
we'd retrace
you'd retrace
they'd retrace 	I'd be retracing
you'd be retracing
she'd be retracing
we'd be retracing
you'd be retracing
they'd be retracing	I should've retraced
you should've retraced
she should've retraced
we should've retraced
you should've retraced
they should've retraced	I should've been retracing
you should've been retracing
she should've been retracing
we should've been retracing
you should've been retracing
they should've been retracing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't retrace
you shouldn't retrace
she shouldn't retrace
we shouldn't retrace
you shouldn't retrace
they shouldn't retrace 	I shouldn't be retracing
you shouldn't be retracing
she shouldn't be retracing
we shouldn't be retracing
you shouldn't be retracing
they shouldn't be retracing	I shouldn't have retraced
you shouldn't have retraced
she shouldn't have retraced
we shouldn't have retraced
you shouldn't have retraced
they shouldn't have retraced	I shouldn't have been retracing
you shouldn't have been retracing
she shouldn't have been retracing
we shouldn't have been retracing
you shouldn't have been retracing
they shouldn't have been retracing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I retrace?
should you retrace?
should she retrace?
should we retrace?
should you retrace?
should they retrace? 	should I be retracing?
should you be retracing?
should she be retracing?
should we be retracing?
should you be retracing?
should they be retracing? 	should I have retraced?
should you have retraced?
should she have retraced?
should we have retraced?
should you have retraced?
should they have retraced? 	should I have been retracing?
should you have been retracing?
should she have been retracing?
should we have been retracing?
should you have been retracing?
should they have been retracing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I retrace?
shouldn't you retrace?
shouldn't she retrace?
shouldn't we retrace?
shouldn't you retrace?
shouldn't they retrace? 	shouldn't I be retracing?
shouldn't you be retracing?
shouldn't she be retracing?
shouldn't we be retracing?
shouldn't you be retracing?
shouldn't they be retracing? 	shouldn't I have retraced?
shouldn't you have retraced?
shouldn't she have retraced?
shouldn't we have retraced?
shouldn't you have retraced?
shouldn't they have retraced? 	shouldn't I have been retracing?
shouldn't you have been retracing?
shouldn't she have been retracing?
shouldn't we have been retracing?
shouldn't you have been retracing?
shouldn't they have been retracing?