must prototype
Verbo regular: prototype - prototyped- prototyped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prototype
you must prototype
he must prototype
we must prototype
you must prototype
they must prototype 	I must be prototyping
you must be prototyping
he must be prototyping
we must be prototyping
you must be prototyping
they must be prototyping	I must have prototyped
you must have prototyped
he must have prototyped
we must have prototyped
you must have prototyped
they must have prototyped	I must have been prototyping
you must have been prototyping
he must have been prototyping
we must have been prototyping
you must have been prototyping
they must have been prototyping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prototype
you must not prototype
he must not prototype
we must not prototype
you must not prototype
they must not prototype 	I must not be prototyping
you must not be prototyping
he must not be prototyping
we must not be prototyping
you must not be prototyping
they must not be prototyping	I must not have prototyped
you must not have prototyped
he must not have prototyped
we must not have prototyped
you must not have prototyped
they must not have prototyped	I must not have been prototyping
you must not have been prototyping
he must not have been prototyping
we must not have been prototyping
you must not have been prototyping
they must not have been prototyping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prototype?
must you prototype?
must he prototype?
must we prototype?
must you prototype?
must they prototype? 	must I be prototyping?
must you be prototyping?
must he be prototyping?
must we be prototyping?
must you be prototyping?
must they be prototyping? 	must I have prototyped?
must you have prototyped?
must he have prototyped?
must we have prototyped?
must you have prototyped?
must they have prototyped? 	must I have been prototyping?
must you have been prototyping?
must he have been prototyping?
must we have been prototyping?
must you have been prototyping?
must they have been prototyping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prototype?
must you not prototype?
must he not prototype?
must we not prototype?
must you not prototype?
must they not prototype? 	must I not be prototyping?
must you not be prototyping?
must he not be prototyping?
must we not be prototyping?
must you not be prototyping?
must they not be prototyping? 	must I not have prototyped?
must you not have prototyped?
must he not have prototyped?
must we not have prototyped?
must you not have prototyped?
must they not have prototyped? 	must I not have been prototyping?
must you not have been prototyping?
must he not have been prototyping?
must we not have been prototyping?
must you not have been prototyping?
must they not have been prototyping?