must build
Verbo irregular: build - built- built

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must build
you must build
she must build
we must build
you must build
they must build 	I must be building
you must be building
she must be building
we must be building
you must be building
they must be building	I must have built
you must have built
she must have built
we must have built
you must have built
they must have built	I must have been building
you must have been building
she must have been building
we must have been building
you must have been building
they must have been building	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't build
you mustn't build
she mustn't build
we mustn't build
you mustn't build
they mustn't build 	I mustn't be building
you mustn't be building
she mustn't be building
we mustn't be building
you mustn't be building
they mustn't be building	I mustn't have built
you mustn't have built
she mustn't have built
we mustn't have built
you mustn't have built
they mustn't have built	I mustn't have been building
you mustn't have been building
she mustn't have been building
we mustn't have been building
you mustn't have been building
they mustn't have been building	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I build?
must you build?
must she build?
must we build?
must you build?
must they build? 	must I be building?
must you be building?
must she be building?
must we be building?
must you be building?
must they be building? 	must I have built?
must you have built?
must she have built?
must we have built?
must you have built?
must they have built? 	must I have been building?
must you have been building?
must she have been building?
must we have been building?
must you have been building?
must they have been building? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I build?
mustn't you build?
mustn't she build?
mustn't we build?
mustn't you build?
mustn't they build? 	mustn't I be building?
mustn't you be building?
mustn't she be building?
mustn't we be building?
mustn't you be building?
mustn't they be building? 	mustn't I have built?
mustn't you have built?
mustn't she have built?
mustn't we have built?
mustn't you have built?
mustn't they have built? 	mustn't I have been building?
mustn't you have been building?
mustn't she have been building?
mustn't we have been building?
mustn't you have been building?
mustn't they have been building?