English verb conjugation COULD UNBOX

Regular verb: unbox - unboxed - unboxed

Affirmation

Simple form

I could unbox
you could unbox
he could unbox
we could unbox
you could unbox
they could unbox

V-ing form

I could be unboxing
you could be unboxing
he could be unboxing
we could be unboxing
you could be unboxing
they could be unboxing

Perfect

I could have unboxed
you could have unboxed
he 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
he 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
he 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
he 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
he 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
he 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 he unbox?
could we unbox?
could you unbox?
could they unbox?

V-ing form

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

Perfect

could I have unboxed?
could you have unboxed?
could he 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 he 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 he 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 he 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 he 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 he 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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