public function getCrossingChars(): array
    {
        return [
            $this->crossingChar,
            $this->crossingTopLeftChar,
            $this->crossingTopMidChar,
            $this->crossingTopRightChar,
            $this->crossingMidRightChar,
            $this->crossingBottomRightChar,
            $this->crossingBottomMidChar,
            $this->crossingBottomLeftChar,
            $this->crossingMidLeftChar,
            $this->crossingTopLeftBottomChar,
            $this->crossingTopMidBottomChar,
            $this->crossingTopRightBottomChar,
        ];
    }