must masturbate
Verbo regular: masturbate - masturbated- masturbated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must masturbate
you must masturbate
he must masturbate
we must masturbate
you must masturbate
they must masturbate 	I must be masturbating
you must be masturbating
he must be masturbating
we must be masturbating
you must be masturbating
they must be masturbating	I must have masturbated
you must have masturbated
he must have masturbated
we must have masturbated
you must have masturbated
they must have masturbated	I must have been masturbating
you must have been masturbating
he must have been masturbating
we must have been masturbating
you must have been masturbating
they must have been masturbating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not masturbate
you must not masturbate
he must not masturbate
we must not masturbate
you must not masturbate
they must not masturbate 	I must not be masturbating
you must not be masturbating
he must not be masturbating
we must not be masturbating
you must not be masturbating
they must not be masturbating	I must not have masturbated
you must not have masturbated
he must not have masturbated
we must not have masturbated
you must not have masturbated
they must not have masturbated	I must not have been masturbating
you must not have been masturbating
he must not have been masturbating
we must not have been masturbating
you must not have been masturbating
they must not have been masturbating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I masturbate?
must you masturbate?
must he masturbate?
must we masturbate?
must you masturbate?
must they masturbate? 	must I be masturbating?
must you be masturbating?
must he be masturbating?
must we be masturbating?
must you be masturbating?
must they be masturbating? 	must I have masturbated?
must you have masturbated?
must he have masturbated?
must we have masturbated?
must you have masturbated?
must they have masturbated? 	must I have been masturbating?
must you have been masturbating?
must he have been masturbating?
must we have been masturbating?
must you have been masturbating?
must they have been masturbating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not masturbate?
must you not masturbate?
must he not masturbate?
must we not masturbate?
must you not masturbate?
must they not masturbate? 	must I not be masturbating?
must you not be masturbating?
must he not be masturbating?
must we not be masturbating?
must you not be masturbating?
must they not be masturbating? 	must I not have masturbated?
must you not have masturbated?
must he not have masturbated?
must we not have masturbated?
must you not have masturbated?
must they not have masturbated? 	must I not have been masturbating?
must you not have been masturbating?
must he not have been masturbating?
must we not have been masturbating?
must you not have been masturbating?
must they not have been masturbating?