English verb conjugation COULD DETERIORATE

Regular verb: deteriorate - deteriorated - deteriorated

Affirmation

Simple form

I could deteriorate
you could deteriorate
he could deteriorate
we could deteriorate
you could deteriorate
they could deteriorate

V-ing form

I could be deteriorating
you could be deteriorating
he could be deteriorating
we could be deteriorating
you could be deteriorating
they could be deteriorating

Perfect

I could have deteriorated
you could have deteriorated
he could have deteriorated
we could have deteriorated
you could have deteriorated
they could have deteriorated

V-ing perfect

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

Negation

Simple form

I could not deteriorate
you could not deteriorate
he could not deteriorate
we could not deteriorate
you could not deteriorate
they could not deteriorate

V-ing form

I could not be deteriorating
you could not be deteriorating
he could not be deteriorating
we could not be deteriorating
you could not be deteriorating
they could not be deteriorating

Perfect

I could not have deteriorated
you could not have deteriorated
he could not have deteriorated
we could not have deteriorated
you could not have deteriorated
they could not have deteriorated

V-ing perfect

I could not have been deteriorating
you could not have been deteriorating
he could not have been deteriorating
we could not have been deteriorating
you could not have been deteriorating
they could not have been deteriorating

Interrogative form

Simple form

could I deteriorate?
could you deteriorate?
could he deteriorate?
could we deteriorate?
could you deteriorate?
could they deteriorate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not deteriorate?
could you not deteriorate?
could he not deteriorate?
could we not deteriorate?
could you not deteriorate?
could they not deteriorate?

V-ing form

could I not be deteriorating?
could you not be deteriorating?
could he not be deteriorating?
could we not be deteriorating?
could you not be deteriorating?
could they not be deteriorating?

Perfect

could I not have deteriorated?
could you not have deteriorated?
could he not have deteriorated?
could we not have deteriorated?
could you not have deteriorated?
could they not have deteriorated?

V-ing perfect

could I not have been deteriorating?
could you not have been deteriorating?
could he not have been deteriorating?
could we not have been deteriorating?
could you not have been deteriorating?
could they not have been deteriorating?

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