English verb conjugation COULD TARNISH

Regular verb: tarnish - tarnished - tarnished

Affirmation

Simple form

I could tarnish
you could tarnish
he could tarnish
we could tarnish
you could tarnish
they could tarnish

V-ing form

I could be tarnishing
you could be tarnishing
he could be tarnishing
we could be tarnishing
you could be tarnishing
they could be tarnishing

Perfect

I could have tarnished
you could have tarnished
he could have tarnished
we could have tarnished
you could have tarnished
they could have tarnished

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tarnish?
could you tarnish?
could he tarnish?
could we tarnish?
could you tarnish?
could they tarnish?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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