private function findNeighbour(array $facet, array &$object, array &$facets)
    {
        foreach ($facets as $key => $_facet) {
            for ($i = 0; $i < 3; $i++) {
                if (in_array($_facet["vertex"][$i], $facet["vertex"])) {
                    unset($facets[$key]);
                    $object[] = $_facet;
                    $this->findNeighbour(
                        $_facet,
                        $object,
                        $facets
                    );
                }
                continue 2;
            }
        }
    }