English verb conjugation COULD PRESERVE

Regular verb: preserve - preserved - preserved

Affirmation

Simple form

I could preserve
you could preserve
he could preserve
we could preserve
you could preserve
they could preserve

V-ing form

I could be preserving
you could be preserving
he could be preserving
we could be preserving
you could be preserving
they could be preserving

Perfect

I could have preserved
you could have preserved
he could have preserved
we could have preserved
you could have preserved
they could have preserved

V-ing perfect

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

Negation

Simple form

I could not preserve
you could not preserve
he could not preserve
we could not preserve
you could not preserve
they could not preserve

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I preserve?
could you preserve?
could he preserve?
could we preserve?
could you preserve?
could they preserve?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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