must muffle
Verbo regolare: muffle - muffled- muffled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must muffle
you must muffle
he must muffle
we must muffle
you must muffle
they must muffle 	I must be muffling
you must be muffling
he must be muffling
we must be muffling
you must be muffling
they must be muffling	I must have muffled
you must have muffled
he must have muffled
we must have muffled
you must have muffled
they must have muffled	I must have been muffling
you must have been muffling
he must have been muffling
we must have been muffling
you must have been muffling
they must have been muffling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not muffle
you must not muffle
he must not muffle
we must not muffle
you must not muffle
they must not muffle 	I must not be muffling
you must not be muffling
he must not be muffling
we must not be muffling
you must not be muffling
they must not be muffling	I must not have muffled
you must not have muffled
he must not have muffled
we must not have muffled
you must not have muffled
they must not have muffled	I must not have been muffling
you must not have been muffling
he must not have been muffling
we must not have been muffling
you must not have been muffling
they must not have been muffling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I muffle?
must you muffle?
must he muffle?
must we muffle?
must you muffle?
must they muffle? 	must I be muffling?
must you be muffling?
must he be muffling?
must we be muffling?
must you be muffling?
must they be muffling? 	must I have muffled?
must you have muffled?
must he have muffled?
must we have muffled?
must you have muffled?
must they have muffled? 	must I have been muffling?
must you have been muffling?
must he have been muffling?
must we have been muffling?
must you have been muffling?
must they have been muffling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not muffle?
must you not muffle?
must he not muffle?
must we not muffle?
must you not muffle?
must they not muffle? 	must I not be muffling?
must you not be muffling?
must he not be muffling?
must we not be muffling?
must you not be muffling?
must they not be muffling? 	must I not have muffled?
must you not have muffled?
must he not have muffled?
must we not have muffled?
must you not have muffled?
must they not have muffled? 	must I not have been muffling?
must you not have been muffling?
must he not have been muffling?
must we not have been muffling?
must you not have been muffling?
must they not have been muffling?