English verb conjugation COULD DECEASE

Regular verb: decease - deceased - deceased

Affirmation

Simple form

I could decease
you could decease
he could decease
we could decease
you could decease
they could decease

V-ing form

I could be deceasing
you could be deceasing
he could be deceasing
we could be deceasing
you could be deceasing
they could be deceasing

Perfect

I could have deceased
you could have deceased
he could have deceased
we could have deceased
you could have deceased
they could have deceased

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I decease?
could you decease?
could he decease?
could we decease?
could you decease?
could they decease?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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