English verb conjugation
CAN YAMMER

Regular verb: yammer - yammered - yammered

Affirmation

Simple form	V-ing form
I can yammer you can yammer he can yammer we can yammer you can yammer they can yammer	I can be yammering you can be yammering he can be yammering we can be yammering you can be yammering they can be yammering
Perfect	V-ing perfect
I can have yammered you can have yammered he can have yammered we can have yammered you can have yammered they can have yammered	I can have been yammering you can have been yammering he can have been yammering we can have been yammering you can have been yammering they can have been yammering

Negation

Simple form	V-ing form
I cannot yammer you cannot yammer he cannot yammer we cannot yammer you cannot yammer they cannot yammer	I cannot be yammering you cannot be yammering he cannot be yammering we cannot be yammering you cannot be yammering they cannot be yammering
Perfect	V-ing perfect
I cannot have yammered you cannot have yammered he cannot have yammered we cannot have yammered you cannot have yammered they cannot have yammered	I cannot have been yammering you cannot have been yammering he cannot have been yammering we cannot have been yammering you cannot have been yammering they cannot have been yammering

Interrogative form

Simple form	V-ing form
can I yammer? can you yammer? can he yammer? can we yammer? can you yammer? can they yammer?	can I be yammering? can you be yammering? can he be yammering? can we be yammering? can you be yammering? can they be yammering?
Perfect	V-ing perfect
can I have yammered? can you have yammered? can he have yammered? can we have yammered? can you have yammered? can they have yammered?	can I have been yammering? can you have been yammering? can he have been yammering? can we have been yammering? can you have been yammering? can they have been yammering?

Interro-negative form

Simple form	V-ing form
can I not yammer? can you not yammer? can he not yammer? can we not yammer? can you not yammer? can they not yammer?	can I not be yammering? can you not be yammering? can he not be yammering? can we not be yammering? can you not be yammering? can they not be yammering?
Perfect	V-ing perfect
can I not have yammered? can you not have yammered? can he not have yammered? can we not have yammered? can you not have yammered? can they not have yammered?	can I not have been yammering? can you not have been yammering? can he not have been yammering? can we not have been yammering? can you not have been yammering? can they not have been yammering?