must lassoo
Verbo regular: lassoo - lassooed- lassooed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must lassoo
you must lassoo
he must lassoo
we must lassoo
you must lassoo
they must lassoo 	I must be lassooing
you must be lassooing
he must be lassooing
we must be lassooing
you must be lassooing
they must be lassooing	I must have lassooed
you must have lassooed
he must have lassooed
we must have lassooed
you must have lassooed
they must have lassooed	I must have been lassooing
you must have been lassooing
he must have been lassooing
we must have been lassooing
you must have been lassooing
they must have been lassooing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't lassoo
you mustn't lassoo
he mustn't lassoo
we mustn't lassoo
you mustn't lassoo
they mustn't lassoo 	I mustn't be lassooing
you mustn't be lassooing
he mustn't be lassooing
we mustn't be lassooing
you mustn't be lassooing
they mustn't be lassooing	I mustn't have lassooed
you mustn't have lassooed
he mustn't have lassooed
we mustn't have lassooed
you mustn't have lassooed
they mustn't have lassooed	I mustn't have been lassooing
you mustn't have been lassooing
he mustn't have been lassooing
we mustn't have been lassooing
you mustn't have been lassooing
they mustn't have been lassooing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I lassoo?
must you lassoo?
must he lassoo?
must we lassoo?
must you lassoo?
must they lassoo? 	must I be lassooing?
must you be lassooing?
must he be lassooing?
must we be lassooing?
must you be lassooing?
must they be lassooing? 	must I have lassooed?
must you have lassooed?
must he have lassooed?
must we have lassooed?
must you have lassooed?
must they have lassooed? 	must I have been lassooing?
must you have been lassooing?
must he have been lassooing?
must we have been lassooing?
must you have been lassooing?
must they have been lassooing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I lassoo?
mustn't you lassoo?
mustn't he lassoo?
mustn't we lassoo?
mustn't you lassoo?
mustn't they lassoo? 	mustn't I be lassooing?
mustn't you be lassooing?
mustn't he be lassooing?
mustn't we be lassooing?
mustn't you be lassooing?
mustn't they be lassooing? 	mustn't I have lassooed?
mustn't you have lassooed?
mustn't he have lassooed?
mustn't we have lassooed?
mustn't you have lassooed?
mustn't they have lassooed? 	mustn't I have been lassooing?
mustn't you have been lassooing?
mustn't he have been lassooing?
mustn't we have been lassooing?
mustn't you have been lassooing?
mustn't they have been lassooing?