English verb conjugation
CAN YES

Regular verb: yes - yesed - yesed

Affirmation

Simple form	V-ing form
I can yes you can yes he can yes we can yes you can yes they can yes	I can be yesing you can be yesing he can be yesing we can be yesing you can be yesing they can be yesing
Perfect	V-ing perfect
I can have yesed you can have yesed he can have yesed we can have yesed you can have yesed they can have yesed	I can have been yesing you can have been yesing he can have been yesing we can have been yesing you can have been yesing they can have been yesing

Negation

Simple form	V-ing form
I cannot yes you cannot yes he cannot yes we cannot yes you cannot yes they cannot yes	I cannot be yesing you cannot be yesing he cannot be yesing we cannot be yesing you cannot be yesing they cannot be yesing
Perfect	V-ing perfect
I cannot have yesed you cannot have yesed he cannot have yesed we cannot have yesed you cannot have yesed they cannot have yesed	I cannot have been yesing you cannot have been yesing he cannot have been yesing we cannot have been yesing you cannot have been yesing they cannot have been yesing

Interrogative form

Simple form	V-ing form
can I yes? can you yes? can he yes? can we yes? can you yes? can they yes?	can I be yesing? can you be yesing? can he be yesing? can we be yesing? can you be yesing? can they be yesing?
Perfect	V-ing perfect
can I have yesed? can you have yesed? can he have yesed? can we have yesed? can you have yesed? can they have yesed?	can I have been yesing? can you have been yesing? can he have been yesing? can we have been yesing? can you have been yesing? can they have been yesing?

Interro-negative form

Simple form	V-ing form
can I not yes? can you not yes? can he not yes? can we not yes? can you not yes? can they not yes?	can I not be yesing? can you not be yesing? can he not be yesing? can we not be yesing? can you not be yesing? can they not be yesing?
Perfect	V-ing perfect
can I not have yesed? can you not have yesed? can he not have yesed? can we not have yesed? can you not have yesed? can they not have yesed?	can I not have been yesing? can you not have been yesing? can he not have been yesing? can we not have been yesing? can you not have been yesing? can they not have been yesing?