must haven
Verbo regular: haven - havened- havened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must haven
you must haven
he must haven
we must haven
you must haven
they must haven 	I must be havening
you must be havening
he must be havening
we must be havening
you must be havening
they must be havening	I must have havened
you must have havened
he must have havened
we must have havened
you must have havened
they must have havened	I must have been havening
you must have been havening
he must have been havening
we must have been havening
you must have been havening
they must have been havening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not haven
you must not haven
he must not haven
we must not haven
you must not haven
they must not haven 	I must not be havening
you must not be havening
he must not be havening
we must not be havening
you must not be havening
they must not be havening	I must not have havened
you must not have havened
he must not have havened
we must not have havened
you must not have havened
they must not have havened	I must not have been havening
you must not have been havening
he must not have been havening
we must not have been havening
you must not have been havening
they must not have been havening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I haven?
must you haven?
must he haven?
must we haven?
must you haven?
must they haven? 	must I be havening?
must you be havening?
must he be havening?
must we be havening?
must you be havening?
must they be havening? 	must I have havened?
must you have havened?
must he have havened?
must we have havened?
must you have havened?
must they have havened? 	must I have been havening?
must you have been havening?
must he have been havening?
must we have been havening?
must you have been havening?
must they have been havening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not haven?
must you not haven?
must he not haven?
must we not haven?
must you not haven?
must they not haven? 	must I not be havening?
must you not be havening?
must he not be havening?
must we not be havening?
must you not be havening?
must they not be havening? 	must I not have havened?
must you not have havened?
must he not have havened?
must we not have havened?
must you not have havened?
must they not have havened? 	must I not have been havening?
must you not have been havening?
must he not have been havening?
must we not have been havening?
must you not have been havening?
must they not have been havening?