English verb conjugation COULD YAMMER

Regular verb: yammer - yammered - yammered

Affirmation

Simple form

I could yammer
you could yammer
he could yammer
we could yammer
you could yammer
they could yammer

V-ing form

I could be yammering
you could be yammering
he could be yammering
we could be yammering
you could be yammering
they could be yammering

Perfect

I could have yammered
you could have yammered
he could have yammered
we could have yammered
you could have yammered
they could have yammered

V-ing perfect

I could have been yammering
you could have been yammering
he could have been yammering
we could have been yammering
you could have been yammering
they could have been yammering

Negation

Simple form

I could not yammer
you could not yammer
he could not yammer
we could not yammer
you could not yammer
they could not yammer

V-ing form

I could not be yammering
you could not be yammering
he could not be yammering
we could not be yammering
you could not be yammering
they could not be yammering

Perfect

I could not have yammered
you could not have yammered
he could not have yammered
we could not have yammered
you could not have yammered
they could not have yammered

V-ing perfect

I could not have been yammering
you could not have been yammering
he could not have been yammering
we could not have been yammering
you could not have been yammering
they could not have been yammering

Interrogative form

Simple form

could I yammer?
could you yammer?
could he yammer?
could we yammer?
could you yammer?
could they yammer?

V-ing form

could I be yammering?
could you be yammering?
could he be yammering?
could we be yammering?
could you be yammering?
could they be yammering?

Perfect

could I have yammered?
could you have yammered?
could he have yammered?
could we have yammered?
could you have yammered?
could they have yammered?

V-ing perfect

could I have been yammering?
could you have been yammering?
could he have been yammering?
could we have been yammering?
could you have been yammering?
could they have been yammering?

Interro-negative form

Simple form

could I not yammer?
could you not yammer?
could he not yammer?
could we not yammer?
could you not yammer?
could they not yammer?

V-ing form

could I not be yammering?
could you not be yammering?
could he not be yammering?
could we not be yammering?
could you not be yammering?
could they not be yammering?

Perfect

could I not have yammered?
could you not have yammered?
could he not have yammered?
could we not have yammered?
could you not have yammered?
could they not have yammered?

V-ing perfect

could I not have been yammering?
could you not have been yammering?
could he not have been yammering?
could we not have been yammering?
could you not have been yammering?
could they not have been yammering?

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