can yammer
Verbo regular: yammer - yammered- yammered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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?