must loop
Verbo regular: loop - looped- looped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must loop
you must loop
he must loop
we must loop
you must loop
they must loop 	I must be looping
you must be looping
he must be looping
we must be looping
you must be looping
they must be looping	I must have looped
you must have looped
he must have looped
we must have looped
you must have looped
they must have looped	I must have been looping
you must have been looping
he must have been looping
we must have been looping
you must have been looping
they must have been looping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not loop
you must not loop
he must not loop
we must not loop
you must not loop
they must not loop 	I must not be looping
you must not be looping
he must not be looping
we must not be looping
you must not be looping
they must not be looping	I must not have looped
you must not have looped
he must not have looped
we must not have looped
you must not have looped
they must not have looped	I must not have been looping
you must not have been looping
he must not have been looping
we must not have been looping
you must not have been looping
they must not have been looping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I loop?
must you loop?
must he loop?
must we loop?
must you loop?
must they loop? 	must I be looping?
must you be looping?
must he be looping?
must we be looping?
must you be looping?
must they be looping? 	must I have looped?
must you have looped?
must he have looped?
must we have looped?
must you have looped?
must they have looped? 	must I have been looping?
must you have been looping?
must he have been looping?
must we have been looping?
must you have been looping?
must they have been looping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not loop?
must you not loop?
must he not loop?
must we not loop?
must you not loop?
must they not loop? 	must I not be looping?
must you not be looping?
must he not be looping?
must we not be looping?
must you not be looping?
must they not be looping? 	must I not have looped?
must you not have looped?
must he not have looped?
must we not have looped?
must you not have looped?
must they not have looped? 	must I not have been looping?
must you not have been looping?
must he not have been looping?
must we not have been looping?
must you not have been looping?
must they not have been looping?