must oyster
Verbo regolare: oyster - oystered- oystered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must oyster
you must oyster
he must oyster
we must oyster
you must oyster
they must oyster 	I must be oystering
you must be oystering
he must be oystering
we must be oystering
you must be oystering
they must be oystering	I must have oystered
you must have oystered
he must have oystered
we must have oystered
you must have oystered
they must have oystered	I must have been oystering
you must have been oystering
he must have been oystering
we must have been oystering
you must have been oystering
they must have been oystering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not oyster
you must not oyster
he must not oyster
we must not oyster
you must not oyster
they must not oyster 	I must not be oystering
you must not be oystering
he must not be oystering
we must not be oystering
you must not be oystering
they must not be oystering	I must not have oystered
you must not have oystered
he must not have oystered
we must not have oystered
you must not have oystered
they must not have oystered	I must not have been oystering
you must not have been oystering
he must not have been oystering
we must not have been oystering
you must not have been oystering
they must not have been oystering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I oyster?
must you oyster?
must he oyster?
must we oyster?
must you oyster?
must they oyster? 	must I be oystering?
must you be oystering?
must he be oystering?
must we be oystering?
must you be oystering?
must they be oystering? 	must I have oystered?
must you have oystered?
must he have oystered?
must we have oystered?
must you have oystered?
must they have oystered? 	must I have been oystering?
must you have been oystering?
must he have been oystering?
must we have been oystering?
must you have been oystering?
must they have been oystering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not oyster?
must you not oyster?
must he not oyster?
must we not oyster?
must you not oyster?
must they not oyster? 	must I not be oystering?
must you not be oystering?
must he not be oystering?
must we not be oystering?
must you not be oystering?
must they not be oystering? 	must I not have oystered?
must you not have oystered?
must he not have oystered?
must we not have oystered?
must you not have oystered?
must they not have oystered? 	must I not have been oystering?
must you not have been oystering?
must he not have been oystering?
must we not have been oystering?
must you not have been oystering?
must they not have been oystering?