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 must not modem
you must not modem
he must not modem
we must not modem
you must not modem
they must not modem 	I must not be modeming
you must not be modeming
he must not be modeming
we must not be modeming
you must not be modeming
they must not be modeming	I must not have modemed
you must not have modemed
he must not have modemed
we must not have modemed
you must not have modemed
they must not have modemed	I must not have been modeming
you must not have been modeming
he must not have been modeming
we must not have been modeming
you must not have been modeming
they must not 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 	
must I not modem?
must you not modem?
must he not modem?
must we not modem?
must you not modem?
must they not modem? 	must I not be modeming?
must you not be modeming?
must he not be modeming?
must we not be modeming?
must you not be modeming?
must they not be modeming? 	must I not have modemed?
must you not have modemed?
must he not have modemed?
must we not have modemed?
must you not have modemed?
must they not have modemed? 	must I not have been modeming?
must you not have been modeming?
must he not have been modeming?
must we not have been modeming?
must you not have been modeming?
must they not have been modeming?