must tram
Verbo regular: tram - tramed- tramed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must tram
you must tram
she must tram
we must tram
you must tram
they must tram 	I must be traming
you must be traming
she must be traming
we must be traming
you must be traming
they must be traming	I must have tramed
you must have tramed
she must have tramed
we must have tramed
you must have tramed
they must have tramed	I must have been traming
you must have been traming
she must have been traming
we must have been traming
you must have been traming
they must have been traming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not tram
you must not tram
she must not tram
we must not tram
you must not tram
they must not tram 	I must not be traming
you must not be traming
she must not be traming
we must not be traming
you must not be traming
they must not be traming	I must not have tramed
you must not have tramed
she must not have tramed
we must not have tramed
you must not have tramed
they must not have tramed	I must not have been traming
you must not have been traming
she must not have been traming
we must not have been traming
you must not have been traming
they must not have been traming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I tram?
must you tram?
must she tram?
must we tram?
must you tram?
must they tram? 	must I be traming?
must you be traming?
must she be traming?
must we be traming?
must you be traming?
must they be traming? 	must I have tramed?
must you have tramed?
must she have tramed?
must we have tramed?
must you have tramed?
must they have tramed? 	must I have been traming?
must you have been traming?
must she have been traming?
must we have been traming?
must you have been traming?
must they have been traming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not tram?
must you not tram?
must she not tram?
must we not tram?
must you not tram?
must they not tram? 	must I not be traming?
must you not be traming?
must she not be traming?
must we not be traming?
must you not be traming?
must they not be traming? 	must I not have tramed?
must you not have tramed?
must she not have tramed?
must we not have tramed?
must you not have tramed?
must they not have tramed? 	must I not have been traming?
must you not have been traming?
must she not have been traming?
must we not have been traming?
must you not have been traming?
must they not have been traming?