must communicate
Verbo regular: communicate - communicated- communicated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must communicate
you must communicate
she must communicate
we must communicate
you must communicate
they must communicate 	I must be communicating
you must be communicating
she must be communicating
we must be communicating
you must be communicating
they must be communicating	I must have communicated
you must have communicated
she must have communicated
we must have communicated
you must have communicated
they must have communicated	I must have been communicating
you must have been communicating
she must have been communicating
we must have been communicating
you must have been communicating
they must have been communicating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not communicate
you must not communicate
she must not communicate
we must not communicate
you must not communicate
they must not communicate 	I must not be communicating
you must not be communicating
she must not be communicating
we must not be communicating
you must not be communicating
they must not be communicating	I must not have communicated
you must not have communicated
she must not have communicated
we must not have communicated
you must not have communicated
they must not have communicated	I must not have been communicating
you must not have been communicating
she must not have been communicating
we must not have been communicating
you must not have been communicating
they must not have been communicating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I communicate?
must you communicate?
must she communicate?
must we communicate?
must you communicate?
must they communicate? 	must I be communicating?
must you be communicating?
must she be communicating?
must we be communicating?
must you be communicating?
must they be communicating? 	must I have communicated?
must you have communicated?
must she have communicated?
must we have communicated?
must you have communicated?
must they have communicated? 	must I have been communicating?
must you have been communicating?
must she have been communicating?
must we have been communicating?
must you have been communicating?
must they have been communicating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not communicate?
must you not communicate?
must she not communicate?
must we not communicate?
must you not communicate?
must they not communicate? 	must I not be communicating?
must you not be communicating?
must she not be communicating?
must we not be communicating?
must you not be communicating?
must they not be communicating? 	must I not have communicated?
must you not have communicated?
must she not have communicated?
must we not have communicated?
must you not have communicated?
must they not have communicated? 	must I not have been communicating?
must you not have been communicating?
must she not have been communicating?
must we not have been communicating?
must you not have been communicating?
must they not have been communicating?