must yowl
Verbo regolare: yowl - yowled- yowled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must yowl
you must yowl
he must yowl
we must yowl
you must yowl
they must yowl 	I must be yowling
you must be yowling
he must be yowling
we must be yowling
you must be yowling
they must be yowling	I must have yowled
you must have yowled
he must have yowled
we must have yowled
you must have yowled
they must have yowled	I must have been yowling
you must have been yowling
he must have been yowling
we must have been yowling
you must have been yowling
they must have been yowling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not yowl
you must not yowl
he must not yowl
we must not yowl
you must not yowl
they must not yowl 	I must not be yowling
you must not be yowling
he must not be yowling
we must not be yowling
you must not be yowling
they must not be yowling	I must not have yowled
you must not have yowled
he must not have yowled
we must not have yowled
you must not have yowled
they must not have yowled	I must not have been yowling
you must not have been yowling
he must not have been yowling
we must not have been yowling
you must not have been yowling
they must not have been yowling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I yowl?
must you yowl?
must he yowl?
must we yowl?
must you yowl?
must they yowl? 	must I be yowling?
must you be yowling?
must he be yowling?
must we be yowling?
must you be yowling?
must they be yowling? 	must I have yowled?
must you have yowled?
must he have yowled?
must we have yowled?
must you have yowled?
must they have yowled? 	must I have been yowling?
must you have been yowling?
must he have been yowling?
must we have been yowling?
must you have been yowling?
must they have been yowling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not yowl?
must you not yowl?
must he not yowl?
must we not yowl?
must you not yowl?
must they not yowl? 	must I not be yowling?
must you not be yowling?
must he not be yowling?
must we not be yowling?
must you not be yowling?
must they not be yowling? 	must I not have yowled?
must you not have yowled?
must he not have yowled?
must we not have yowled?
must you not have yowled?
must they not have yowled? 	must I not have been yowling?
must you not have been yowling?
must he not have been yowling?
must we not have been yowling?
must you not have been yowling?
must they not have been yowling?