must subtend
Verbo regular: subtend - subtended- subtended

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must subtend
you must subtend
he must subtend
we must subtend
you must subtend
they must subtend 	I must be subtending
you must be subtending
he must be subtending
we must be subtending
you must be subtending
they must be subtending	I must have subtended
you must have subtended
he must have subtended
we must have subtended
you must have subtended
they must have subtended	I must have been subtending
you must have been subtending
he must have been subtending
we must have been subtending
you must have been subtending
they must have been subtending	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't subtend
you mustn't subtend
he mustn't subtend
we mustn't subtend
you mustn't subtend
they mustn't subtend 	I mustn't be subtending
you mustn't be subtending
he mustn't be subtending
we mustn't be subtending
you mustn't be subtending
they mustn't be subtending	I mustn't have subtended
you mustn't have subtended
he mustn't have subtended
we mustn't have subtended
you mustn't have subtended
they mustn't have subtended	I mustn't have been subtending
you mustn't have been subtending
he mustn't have been subtending
we mustn't have been subtending
you mustn't have been subtending
they mustn't have been subtending	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I subtend?
must you subtend?
must he subtend?
must we subtend?
must you subtend?
must they subtend? 	must I be subtending?
must you be subtending?
must he be subtending?
must we be subtending?
must you be subtending?
must they be subtending? 	must I have subtended?
must you have subtended?
must he have subtended?
must we have subtended?
must you have subtended?
must they have subtended? 	must I have been subtending?
must you have been subtending?
must he have been subtending?
must we have been subtending?
must you have been subtending?
must they have been subtending? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I subtend?
mustn't you subtend?
mustn't he subtend?
mustn't we subtend?
mustn't you subtend?
mustn't they subtend? 	mustn't I be subtending?
mustn't you be subtending?
mustn't he be subtending?
mustn't we be subtending?
mustn't you be subtending?
mustn't they be subtending? 	mustn't I have subtended?
mustn't you have subtended?
mustn't he have subtended?
mustn't we have subtended?
mustn't you have subtended?
mustn't they have subtended? 	mustn't I have been subtending?
mustn't you have been subtending?
mustn't he have been subtending?
mustn't we have been subtending?
mustn't you have been subtending?
mustn't they have been subtending?