English verb conjugation COULD BEHAVE

Regular verb: behave - behaved - behaved

Affirmation

Simple form

I could behave
you could behave
he could behave
we could behave
you could behave
they could behave

V-ing form

I could be behaving
you could be behaving
he could be behaving
we could be behaving
you could be behaving
they could be behaving

Perfect

I could have behaved
you could have behaved
he could have behaved
we could have behaved
you could have behaved
they could have behaved

V-ing perfect

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

Negation

Simple form

I could not behave
you could not behave
he could not behave
we could not behave
you could not behave
they could not behave

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I behave?
could you behave?
could he behave?
could we behave?
could you behave?
could they behave?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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