English verb conjugation COULD SHELL

Regular verb: shell - shelled - shelled

Affirmation

Simple form

I could shell
you could shell
he could shell
we could shell
you could shell
they could shell

V-ing form

I could be shelling
you could be shelling
he could be shelling
we could be shelling
you could be shelling
they could be shelling

Perfect

I could have shelled
you could have shelled
he could have shelled
we could have shelled
you could have shelled
they could have shelled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I shell?
could you shell?
could he shell?
could we shell?
could you shell?
could they shell?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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