English verb conjugation COULD YEN

Regular verb: yen - yenned - yenned

Affirmation

Simple form

I could yen
you could yen
he could yen
we could yen
you could yen
they could yen

V-ing form

I could be yenning
you could be yenning
he could be yenning
we could be yenning
you could be yenning
they could be yenning

Perfect

I could have yenned
you could have yenned
he could have yenned
we could have yenned
you could have yenned
they could have yenned

V-ing perfect

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

Negation

Simple form

I could not yen
you could not yen
he could not yen
we could not yen
you could not yen
they could not yen

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I yen?
could you yen?
could he yen?
could we yen?
could you yen?
could they yen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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