must muzzle
Verbo regular: muzzle - muzzled- muzzled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must muzzle
you must muzzle
he must muzzle
we must muzzle
you must muzzle
they must muzzle 	I must be muzzling
you must be muzzling
he must be muzzling
we must be muzzling
you must be muzzling
they must be muzzling	I must have muzzled
you must have muzzled
he must have muzzled
we must have muzzled
you must have muzzled
they must have muzzled	I must have been muzzling
you must have been muzzling
he must have been muzzling
we must have been muzzling
you must have been muzzling
they must have been muzzling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not muzzle
you must not muzzle
he must not muzzle
we must not muzzle
you must not muzzle
they must not muzzle 	I must not be muzzling
you must not be muzzling
he must not be muzzling
we must not be muzzling
you must not be muzzling
they must not be muzzling	I must not have muzzled
you must not have muzzled
he must not have muzzled
we must not have muzzled
you must not have muzzled
they must not have muzzled	I must not have been muzzling
you must not have been muzzling
he must not have been muzzling
we must not have been muzzling
you must not have been muzzling
they must not have been muzzling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I muzzle?
must you muzzle?
must he muzzle?
must we muzzle?
must you muzzle?
must they muzzle? 	must I be muzzling?
must you be muzzling?
must he be muzzling?
must we be muzzling?
must you be muzzling?
must they be muzzling? 	must I have muzzled?
must you have muzzled?
must he have muzzled?
must we have muzzled?
must you have muzzled?
must they have muzzled? 	must I have been muzzling?
must you have been muzzling?
must he have been muzzling?
must we have been muzzling?
must you have been muzzling?
must they have been muzzling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not muzzle?
must you not muzzle?
must he not muzzle?
must we not muzzle?
must you not muzzle?
must they not muzzle? 	must I not be muzzling?
must you not be muzzling?
must he not be muzzling?
must we not be muzzling?
must you not be muzzling?
must they not be muzzling? 	must I not have muzzled?
must you not have muzzled?
must he not have muzzled?
must we not have muzzled?
must you not have muzzled?
must they not have muzzled? 	must I not have been muzzling?
must you not have been muzzling?
must he not have been muzzling?
must we not have been muzzling?
must you not have been muzzling?
must they not have been muzzling?