I must retrace you must retrace she must retrace we must retrace you must retrace they must retrace
Forma con V-ing
I must be retracing you must be retracing she must be retracing we must be retracing you must be retracing they must be retracing
Perfecto
I must have retraced you must have retraced she must have retraced we must have retraced you must have retraced they must have retraced
Perfecto con V-ing
I must have been retracing you must have been retracing she must have been retracing we must have been retracing you must have been retracing they must have been retracing
Negación
Forma simple
I must not retrace you must not retrace she must not retrace we must not retrace you must not retrace they must not retrace
Forma con V-ing
I must not be retracing you must not be retracing she must not be retracing we must not be retracing you must not be retracing they must not be retracing
Perfecto
I must not have retraced you must not have retraced she must not have retraced we must not have retraced you must not have retraced they must not have retraced
Perfecto con V-ing
I must not have been retracing you must not have been retracing she must not have been retracing we must not have been retracing you must not have been retracing they must not have been retracing
Forma interrogativa
Forma simple
must I retrace? must you retrace? must she retrace? must we retrace? must you retrace? must they retrace?
Forma con V-ing
must I be retracing? must you be retracing? must she be retracing? must we be retracing? must you be retracing? must they be retracing?
Perfecto
must I have retraced? must you have retraced? must she have retraced? must we have retraced? must you have retraced? must they have retraced?
Perfecto con V-ing
must I have been retracing? must you have been retracing? must she have been retracing? must we have been retracing? must you have been retracing? must they have been retracing?
Forma interro-negativa
Forma simple
must I not retrace? must you not retrace? must she not retrace? must we not retrace? must you not retrace? must they not retrace?
Forma con V-ing
must I not be retracing? must you not be retracing? must she not be retracing? must we not be retracing? must you not be retracing? must they not be retracing?
Perfecto
must I not have retraced? must you not have retraced? must she not have retraced? must we not have retraced? must you not have retraced? must they not have retraced?
Perfecto con V-ing
must I not have been retracing? must you not have been retracing? must she not have been retracing? must we not have been retracing? must you not have been retracing? must they not have been retracing?