must loo
Verbo regular: loo - looed- looed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must loo
you must loo
she must loo
we must loo
you must loo
they must loo 	I must be looing
you must be looing
she must be looing
we must be looing
you must be looing
they must be looing	I must have looed
you must have looed
she must have looed
we must have looed
you must have looed
they must have looed	I must have been looing
you must have been looing
she must have been looing
we must have been looing
you must have been looing
they must have been looing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't loo
you mustn't loo
she mustn't loo
we mustn't loo
you mustn't loo
they mustn't loo 	I mustn't be looing
you mustn't be looing
she mustn't be looing
we mustn't be looing
you mustn't be looing
they mustn't be looing	I mustn't have looed
you mustn't have looed
she mustn't have looed
we mustn't have looed
you mustn't have looed
they mustn't have looed	I mustn't have been looing
you mustn't have been looing
she mustn't have been looing
we mustn't have been looing
you mustn't have been looing
they mustn't have been looing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I loo?
must you loo?
must she loo?
must we loo?
must you loo?
must they loo? 	must I be looing?
must you be looing?
must she be looing?
must we be looing?
must you be looing?
must they be looing? 	must I have looed?
must you have looed?
must she have looed?
must we have looed?
must you have looed?
must they have looed? 	must I have been looing?
must you have been looing?
must she have been looing?
must we have been looing?
must you have been looing?
must they have been looing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I loo?
mustn't you loo?
mustn't she loo?
mustn't we loo?
mustn't you loo?
mustn't they loo? 	mustn't I be looing?
mustn't you be looing?
mustn't she be looing?
mustn't we be looing?
mustn't you be looing?
mustn't they be looing? 	mustn't I have looed?
mustn't you have looed?
mustn't she have looed?
mustn't we have looed?
mustn't you have looed?
mustn't they have looed? 	mustn't I have been looing?
mustn't you have been looing?
mustn't she have been looing?
mustn't we have been looing?
mustn't you have been looing?
mustn't they have been looing?