English verb conjugation COULD POISON

Regular verb: poison - poisoned - poisoned

Affirmation

Simple form

I could poison
you could poison
he could poison
we could poison
you could poison
they could poison

V-ing form

I could be poisoning
you could be poisoning
he could be poisoning
we could be poisoning
you could be poisoning
they could be poisoning

Perfect

I could have poisoned
you could have poisoned
he could have poisoned
we could have poisoned
you could have poisoned
they could have poisoned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I poison?
could you poison?
could he poison?
could we poison?
could you poison?
could they poison?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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