English verb conjugation
COULD BEHAVE BEHAVE BEHAVE BEHAVE

Regular verb: behave behave behave behave - behave behave behave behaved - behave behave behave behaved

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could behave behave behave behave you could behave behave behave behave he could behave behave behave behave we could behave behave behave behave you could behave behave behave behave they could behave behave behave behave	I could be behave behave behave behaving you could be behave behave behave behaving he could be behave behave behave behaving we could be behave behave behave behaving you could be behave behave behave behaving they could be behave behave behave behaving
Perfect	V-ing perfect
I could have behave behave behave behaved you could have behave behave behave behaved he could have behave behave behave behaved we could have behave behave behave behaved you could have behave behave behave behaved they could have behave behave behave behaved	I could have been behave behave behave behaving you could have been behave behave behave behaving he could have been behave behave behave behaving we could have been behave behave behave behaving you could have been behave behave behave behaving they could have been behave behave behave behaving

Negation

Simple form	V-ing form
I couldn't behave behave behave behave you couldn't behave behave behave behave he couldn't behave behave behave behave we couldn't behave behave behave behave you couldn't behave behave behave behave they couldn't behave behave behave behave	I couldn't be behave behave behave behaving you couldn't be behave behave behave behaving he couldn't be behave behave behave behaving we couldn't be behave behave behave behaving you couldn't be behave behave behave behaving they couldn't be behave behave behave behaving
Perfect	V-ing perfect
I couldn't have behave behave behave behaved you couldn't have behave behave behave behaved he couldn't have behave behave behave behaved we couldn't have behave behave behave behaved you couldn't have behave behave behave behaved they couldn't have behave behave behave behaved	I couldn't have been behave behave behave behaving you couldn't have been behave behave behave behaving he couldn't have been behave behave behave behaving we couldn't have been behave behave behave behaving you couldn't have been behave behave behave behaving they couldn't have been behave behave behave behaving

Interrogative form

Simple form	V-ing form
could I behave behave behave behave? could you behave behave behave behave? could he behave behave behave behave? could we behave behave behave behave? could you behave behave behave behave? could they behave behave behave behave?	could I be behave behave behave behaving? could you be behave behave behave behaving? could he be behave behave behave behaving? could we be behave behave behave behaving? could you be behave behave behave behaving? could they be behave behave behave behaving?
Perfect	V-ing perfect
could I have behave behave behave behaved? could you have behave behave behave behaved? could he have behave behave behave behaved? could we have behave behave behave behaved? could you have behave behave behave behaved? could they have behave behave behave behaved?	could I have been behave behave behave behaving? could you have been behave behave behave behaving? could he have been behave behave behave behaving? could we have been behave behave behave behaving? could you have been behave behave behave behaving? could they have been behave behave behave behaving?

Interro-negative form

Simple form	V-ing form
couldn't I behave behave behave behave? couldn't you behave behave behave behave? couldn't he behave behave behave behave? couldn't we behave behave behave behave? couldn't you behave behave behave behave? couldn't they behave behave behave behave?	couldn't I be behave behave behave behaving? couldn't you be behave behave behave behaving? couldn't he be behave behave behave behaving? couldn't we be behave behave behave behaving? couldn't you be behave behave behave behaving? couldn't they be behave behave behave behaving?
Perfect	V-ing perfect
couldn't I have behave behave behave behaved? couldn't you have behave behave behave behaved? couldn't he have behave behave behave behaved? couldn't we have behave behave behave behaved? couldn't you have behave behave behave behaved? couldn't they have behave behave behave behaved?	couldn't I have been behave behave behave behaving? couldn't you have been behave behave behave behaving? couldn't he have been behave behave behave behaving? couldn't we have been behave behave behave behaving? couldn't you have been behave behave behave behaving? couldn't they have been behave behave behave behaving?