must border
Verbo regular: border - bordered- bordered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must border
you must border
he must border
we must border
you must border
they must border 	I must be bordering
you must be bordering
he must be bordering
we must be bordering
you must be bordering
they must be bordering	I must have bordered
you must have bordered
he must have bordered
we must have bordered
you must have bordered
they must have bordered	I must have been bordering
you must have been bordering
he must have been bordering
we must have been bordering
you must have been bordering
they must have been bordering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't border
you mustn't border
he mustn't border
we mustn't border
you mustn't border
they mustn't border 	I mustn't be bordering
you mustn't be bordering
he mustn't be bordering
we mustn't be bordering
you mustn't be bordering
they mustn't be bordering	I mustn't have bordered
you mustn't have bordered
he mustn't have bordered
we mustn't have bordered
you mustn't have bordered
they mustn't have bordered	I mustn't have been bordering
you mustn't have been bordering
he mustn't have been bordering
we mustn't have been bordering
you mustn't have been bordering
they mustn't have been bordering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I border?
must you border?
must he border?
must we border?
must you border?
must they border? 	must I be bordering?
must you be bordering?
must he be bordering?
must we be bordering?
must you be bordering?
must they be bordering? 	must I have bordered?
must you have bordered?
must he have bordered?
must we have bordered?
must you have bordered?
must they have bordered? 	must I have been bordering?
must you have been bordering?
must he have been bordering?
must we have been bordering?
must you have been bordering?
must they have been bordering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I border?
mustn't you border?
mustn't he border?
mustn't we border?
mustn't you border?
mustn't they border? 	mustn't I be bordering?
mustn't you be bordering?
mustn't he be bordering?
mustn't we be bordering?
mustn't you be bordering?
mustn't they be bordering? 	mustn't I have bordered?
mustn't you have bordered?
mustn't he have bordered?
mustn't we have bordered?
mustn't you have bordered?
mustn't they have bordered? 	mustn't I have been bordering?
mustn't you have been bordering?
mustn't he have been bordering?
mustn't we have been bordering?
mustn't you have been bordering?
mustn't they have been bordering?