must modem
Verbo regular: modem - modemed- modemed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must modem
you must modem
he must modem
we must modem
you must modem
they must modem 	I must be modeming
you must be modeming
he must be modeming
we must be modeming
you must be modeming
they must be modeming	I must have modemed
you must have modemed
he must have modemed
we must have modemed
you must have modemed
they must have modemed	I must have been modeming
you must have been modeming
he must have been modeming
we must have been modeming
you must have been modeming
they must have been modeming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't modem
you mustn't modem
he mustn't modem
we mustn't modem
you mustn't modem
they mustn't modem 	I mustn't be modeming
you mustn't be modeming
he mustn't be modeming
we mustn't be modeming
you mustn't be modeming
they mustn't be modeming	I mustn't have modemed
you mustn't have modemed
he mustn't have modemed
we mustn't have modemed
you mustn't have modemed
they mustn't have modemed	I mustn't have been modeming
you mustn't have been modeming
he mustn't have been modeming
we mustn't have been modeming
you mustn't have been modeming
they mustn't have been modeming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I modem?
must you modem?
must he modem?
must we modem?
must you modem?
must they modem? 	must I be modeming?
must you be modeming?
must he be modeming?
must we be modeming?
must you be modeming?
must they be modeming? 	must I have modemed?
must you have modemed?
must he have modemed?
must we have modemed?
must you have modemed?
must they have modemed? 	must I have been modeming?
must you have been modeming?
must he have been modeming?
must we have been modeming?
must you have been modeming?
must they have been modeming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I modem?
mustn't you modem?
mustn't he modem?
mustn't we modem?
mustn't you modem?
mustn't they modem? 	mustn't I be modeming?
mustn't you be modeming?
mustn't he be modeming?
mustn't we be modeming?
mustn't you be modeming?
mustn't they be modeming? 	mustn't I have modemed?
mustn't you have modemed?
mustn't he have modemed?
mustn't we have modemed?
mustn't you have modemed?
mustn't they have modemed? 	mustn't I have been modeming?
mustn't you have been modeming?
mustn't he have been modeming?
mustn't we have been modeming?
mustn't you have been modeming?
mustn't they have been modeming?