English verb conjugation COULD UNZIP

Regular verb: unzip - unziped - unziped

Affirmation

Simple form

I could unzip
you could unzip
he could unzip
we could unzip
you could unzip
they could unzip

V-ing form

I could be unziping
you could be unziping
he could be unziping
we could be unziping
you could be unziping
they could be unziping

Perfect

I could have unziped
you could have unziped
he could have unziped
we could have unziped
you could have unziped
they could have unziped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I unzip?
could you unzip?
could he unzip?
could we unzip?
could you unzip?
could they unzip?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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