must clam
Verbo regular: clam - clamed- clamed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must clam
you must clam
he must clam
we must clam
you must clam
they must clam 	I must be claming
you must be claming
he must be claming
we must be claming
you must be claming
they must be claming	I must have clamed
you must have clamed
he must have clamed
we must have clamed
you must have clamed
they must have clamed	I must have been claming
you must have been claming
he must have been claming
we must have been claming
you must have been claming
they must have been claming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not clam
you must not clam
he must not clam
we must not clam
you must not clam
they must not clam 	I must not be claming
you must not be claming
he must not be claming
we must not be claming
you must not be claming
they must not be claming	I must not have clamed
you must not have clamed
he must not have clamed
we must not have clamed
you must not have clamed
they must not have clamed	I must not have been claming
you must not have been claming
he must not have been claming
we must not have been claming
you must not have been claming
they must not have been claming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I clam?
must you clam?
must he clam?
must we clam?
must you clam?
must they clam? 	must I be claming?
must you be claming?
must he be claming?
must we be claming?
must you be claming?
must they be claming? 	must I have clamed?
must you have clamed?
must he have clamed?
must we have clamed?
must you have clamed?
must they have clamed? 	must I have been claming?
must you have been claming?
must he have been claming?
must we have been claming?
must you have been claming?
must they have been claming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not clam?
must you not clam?
must he not clam?
must we not clam?
must you not clam?
must they not clam? 	must I not be claming?
must you not be claming?
must he not be claming?
must we not be claming?
must you not be claming?
must they not be claming? 	must I not have clamed?
must you not have clamed?
must he not have clamed?
must we not have clamed?
must you not have clamed?
must they not have clamed? 	must I not have been claming?
must you not have been claming?
must he not have been claming?
must we not have been claming?
must you not have been claming?
must they not have been claming?