must untie
Verbo regular: untie - untied- untied

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must untie
you must untie
he must untie
we must untie
you must untie
they must untie 	I must be untying
you must be untying
he must be untying
we must be untying
you must be untying
they must be untying	I must have untied
you must have untied
he must have untied
we must have untied
you must have untied
they must have untied	I must have been untying
you must have been untying
he must have been untying
we must have been untying
you must have been untying
they must have been untying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't untie
you mustn't untie
he mustn't untie
we mustn't untie
you mustn't untie
they mustn't untie 	I mustn't be untying
you mustn't be untying
he mustn't be untying
we mustn't be untying
you mustn't be untying
they mustn't be untying	I mustn't have untied
you mustn't have untied
he mustn't have untied
we mustn't have untied
you mustn't have untied
they mustn't have untied	I mustn't have been untying
you mustn't have been untying
he mustn't have been untying
we mustn't have been untying
you mustn't have been untying
they mustn't have been untying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I untie?
must you untie?
must he untie?
must we untie?
must you untie?
must they untie? 	must I be untying?
must you be untying?
must he be untying?
must we be untying?
must you be untying?
must they be untying? 	must I have untied?
must you have untied?
must he have untied?
must we have untied?
must you have untied?
must they have untied? 	must I have been untying?
must you have been untying?
must he have been untying?
must we have been untying?
must you have been untying?
must they have been untying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I untie?
mustn't you untie?
mustn't he untie?
mustn't we untie?
mustn't you untie?
mustn't they untie? 	mustn't I be untying?
mustn't you be untying?
mustn't he be untying?
mustn't we be untying?
mustn't you be untying?
mustn't they be untying? 	mustn't I have untied?
mustn't you have untied?
mustn't he have untied?
mustn't we have untied?
mustn't you have untied?
mustn't they have untied? 	mustn't I have been untying?
mustn't you have been untying?
mustn't he have been untying?
mustn't we have been untying?
mustn't you have been untying?
mustn't they have been untying?