English verb conjugation COULD HISS

Regular verb: hiss - hissed - hissed

Affirmation

Simple form

I could hiss
you could hiss
he could hiss
we could hiss
you could hiss
they could hiss

V-ing form

I could be hissing
you could be hissing
he could be hissing
we could be hissing
you could be hissing
they could be hissing

Perfect

I could have hissed
you could have hissed
he could have hissed
we could have hissed
you could have hissed
they could have hissed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I hiss?
could you hiss?
could he hiss?
could we hiss?
could you hiss?
could they hiss?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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