English verb conjugation COULD DECAY

Regular verb: decay - decayed - decayed

Affirmation

Simple form

I could decay
you could decay
he could decay
we could decay
you could decay
they could decay

V-ing form

I could be decaying
you could be decaying
he could be decaying
we could be decaying
you could be decaying
they could be decaying

Perfect

I could have decayed
you could have decayed
he could have decayed
we could have decayed
you could have decayed
they could have decayed

V-ing perfect

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

Negation

Simple form

I couldn't decay
you couldn't decay
he couldn't decay
we couldn't decay
you couldn't decay
they couldn't decay

V-ing form

I couldn't be decaying
you couldn't be decaying
he couldn't be decaying
we couldn't be decaying
you couldn't be decaying
they couldn't be decaying

Perfect

I couldn't have decayed
you couldn't have decayed
he couldn't have decayed
we couldn't have decayed
you couldn't have decayed
they couldn't have decayed

V-ing perfect

I couldn't have been decaying
you couldn't have been decaying
he couldn't have been decaying
we couldn't have been decaying
you couldn't have been decaying
they couldn't have been decaying

Interrogative form

Simple form

could I decay?
could you decay?
could he decay?
could we decay?
could you decay?
could they decay?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I decay?
couldn't you decay?
couldn't he decay?
couldn't we decay?
couldn't you decay?
couldn't they decay?

V-ing form

couldn't I be decaying?
couldn't you be decaying?
couldn't he be decaying?
couldn't we be decaying?
couldn't you be decaying?
couldn't they be decaying?

Perfect

couldn't I have decayed?
couldn't you have decayed?
couldn't he have decayed?
couldn't we have decayed?
couldn't you have decayed?
couldn't they have decayed?

V-ing perfect

couldn't I have been decaying?
couldn't you have been decaying?
couldn't he have been decaying?
couldn't we have been decaying?
couldn't you have been decaying?
couldn't they have been decaying?

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