English verb conjugation
CAN PROTOTYPE

Regular verb: prototype - prototyped - prototyped

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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