must prototype
Regular verb: prototype - prototyped- prototyped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prototype
you must prototype
she must prototype
we must prototype
you must prototype
they must prototype 	I must be prototyping
you must be prototyping
she must be prototyping
we must be prototyping
you must be prototyping
they must be prototyping	I must have prototyped
you must have prototyped
she 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
she must have been prototyping
we must have been prototyping
you must have been prototyping
they must have been prototyping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prototype
you mustn't prototype
she mustn't prototype
we mustn't prototype
you mustn't prototype
they mustn't prototype 	I mustn't be prototyping
you mustn't be prototyping
she mustn't be prototyping
we mustn't be prototyping
you mustn't be prototyping
they mustn't be prototyping	I mustn't have prototyped
you mustn't have prototyped
she mustn't have prototyped
we mustn't have prototyped
you mustn't have prototyped
they mustn't have prototyped	I mustn't have been prototyping
you mustn't have been prototyping
she mustn't have been prototyping
we mustn't have been prototyping
you mustn't have been prototyping
they mustn't have been prototyping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prototype?
must you prototype?
must she prototype?
must we prototype?
must you prototype?
must they prototype? 	must I be prototyping?
must you be prototyping?
must she be prototyping?
must we be prototyping?
must you be prototyping?
must they be prototyping? 	must I have prototyped?
must you have prototyped?
must she 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 she have been prototyping?
must we have been prototyping?
must you have been prototyping?
must they have been prototyping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prototype?
mustn't you prototype?
mustn't she prototype?
mustn't we prototype?
mustn't you prototype?
mustn't they prototype? 	mustn't I be prototyping?
mustn't you be prototyping?
mustn't she be prototyping?
mustn't we be prototyping?
mustn't you be prototyping?
mustn't they be prototyping? 	mustn't I have prototyped?
mustn't you have prototyped?
mustn't she have prototyped?
mustn't we have prototyped?
mustn't you have prototyped?
mustn't they have prototyped? 	mustn't I have been prototyping?
mustn't you have been prototyping?
mustn't she have been prototyping?
mustn't we have been prototyping?
mustn't you have been prototyping?
mustn't they have been prototyping?