English verb conjugation COULD UNDERFURNISH

Regular verb: underfurnish - underfurnished - underfurnished

Affirmation

Simple form

I could underfurnish
you could underfurnish
he could underfurnish
we could underfurnish
you could underfurnish
they could underfurnish

V-ing form

I could be underfurnishing
you could be underfurnishing
he could be underfurnishing
we could be underfurnishing
you could be underfurnishing
they could be underfurnishing

Perfect

I could have underfurnished
you could have underfurnished
he could have underfurnished
we could have underfurnished
you could have underfurnished
they could have underfurnished

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I underfurnish?
could you underfurnish?
could he underfurnish?
could we underfurnish?
could you underfurnish?
could they underfurnish?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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