must trace
Verbo regular: trace - traced- traced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must trace
you must trace
he must trace
we must trace
you must trace
they must trace 	I must be tracing
you must be tracing
he must be tracing
we must be tracing
you must be tracing
they must be tracing	I must have traced
you must have traced
he must have traced
we must have traced
you must have traced
they must have traced	I must have been tracing
you must have been tracing
he must have been tracing
we must have been tracing
you must have been tracing
they must have been tracing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not trace
you must not trace
he must not trace
we must not trace
you must not trace
they must not trace 	I must not be tracing
you must not be tracing
he must not be tracing
we must not be tracing
you must not be tracing
they must not be tracing	I must not have traced
you must not have traced
he must not have traced
we must not have traced
you must not have traced
they must not have traced	I must not have been tracing
you must not have been tracing
he must not have been tracing
we must not have been tracing
you must not have been tracing
they must not have been tracing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I trace?
must you trace?
must he trace?
must we trace?
must you trace?
must they trace? 	must I be tracing?
must you be tracing?
must he be tracing?
must we be tracing?
must you be tracing?
must they be tracing? 	must I have traced?
must you have traced?
must he have traced?
must we have traced?
must you have traced?
must they have traced? 	must I have been tracing?
must you have been tracing?
must he have been tracing?
must we have been tracing?
must you have been tracing?
must they have been tracing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not trace?
must you not trace?
must he not trace?
must we not trace?
must you not trace?
must they not trace? 	must I not be tracing?
must you not be tracing?
must he not be tracing?
must we not be tracing?
must you not be tracing?
must they not be tracing? 	must I not have traced?
must you not have traced?
must he not have traced?
must we not have traced?
must you not have traced?
must they not have traced? 	must I not have been tracing?
must you not have been tracing?
must he not have been tracing?
must we not have been tracing?
must you not have been tracing?
must they not have been tracing?