English verb conjugation COULD TUNNEL

Regular verb: tunnel - tunnelled - tunnelled

Affirmation

Simple form

I could tunnel
you could tunnel
he could tunnel
we could tunnel
you could tunnel
they could tunnel

V-ing form

I could be tunnelling
you could be tunnelling
he could be tunnelling
we could be tunnelling
you could be tunnelling
they could be tunnelling

Perfect

I could have tunnelled
you could have tunnelled
he could have tunnelled
we could have tunnelled
you could have tunnelled
they could have tunnelled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tunnel?
could you tunnel?
could he tunnel?
could we tunnel?
could you tunnel?
could they tunnel?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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