English verb conjugation COULD RUST

Regular verb: rust - rusted - rusted

Affirmation

Simple form

I could rust
you could rust
he could rust
we could rust
you could rust
they could rust

V-ing form

I could be rusting
you could be rusting
he could be rusting
we could be rusting
you could be rusting
they could be rusting

Perfect

I could have rusted
you could have rusted
he could have rusted
we could have rusted
you could have rusted
they could have rusted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I rust?
could you rust?
could he rust?
could we rust?
could you rust?
could they rust?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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