English verb conjugation COULD UNBOX

Regular verb: unbox - unboxed - unboxed

Affirmation

Simple form

I could unbox
you could unbox
she could unbox
we could unbox
you could unbox
they could unbox

V-ing form

I could be unboxing
you could be unboxing
she could be unboxing
we could be unboxing
you could be unboxing
they could be unboxing

Perfect

I could have unboxed
you could have unboxed
she could have unboxed
we could have unboxed
you could have unboxed
they could have unboxed

V-ing perfect

I could have been unboxing
you could have been unboxing
she could have been unboxing
we could have been unboxing
you could have been unboxing
they could have been unboxing

Negation

Simple form

I couldn't unbox
you couldn't unbox
she couldn't unbox
we couldn't unbox
you couldn't unbox
they couldn't unbox

V-ing form

I couldn't be unboxing
you couldn't be unboxing
she couldn't be unboxing
we couldn't be unboxing
you couldn't be unboxing
they couldn't be unboxing

Perfect

I couldn't have unboxed
you couldn't have unboxed
she couldn't have unboxed
we couldn't have unboxed
you couldn't have unboxed
they couldn't have unboxed

V-ing perfect

I couldn't have been unboxing
you couldn't have been unboxing
she couldn't have been unboxing
we couldn't have been unboxing
you couldn't have been unboxing
they couldn't have been unboxing

Interrogative form

Simple form

could I unbox?
could you unbox?
could she unbox?
could we unbox?
could you unbox?
could they unbox?

V-ing form

could I be unboxing?
could you be unboxing?
could she be unboxing?
could we be unboxing?
could you be unboxing?
could they be unboxing?

Perfect

could I have unboxed?
could you have unboxed?
could she have unboxed?
could we have unboxed?
could you have unboxed?
could they have unboxed?

V-ing perfect

could I have been unboxing?
could you have been unboxing?
could she have been unboxing?
could we have been unboxing?
could you have been unboxing?
could they have been unboxing?

Interro-negative form

Simple form

couldn't I unbox?
couldn't you unbox?
couldn't she unbox?
couldn't we unbox?
couldn't you unbox?
couldn't they unbox?

V-ing form

couldn't I be unboxing?
couldn't you be unboxing?
couldn't she be unboxing?
couldn't we be unboxing?
couldn't you be unboxing?
couldn't they be unboxing?

Perfect

couldn't I have unboxed?
couldn't you have unboxed?
couldn't she have unboxed?
couldn't we have unboxed?
couldn't you have unboxed?
couldn't they have unboxed?

V-ing perfect

couldn't I have been unboxing?
couldn't you have been unboxing?
couldn't she have been unboxing?
couldn't we have been unboxing?
couldn't you have been unboxing?
couldn't they have been unboxing?

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