public static function Stem($word)
    {
        if (strlen($word) <= 2) {
            return $word;
        }

        $word = self::step1ab($word);
        $word = self::step1c($word);
        $word = self::step2($word);
        $word = self::step3($word);
        $word = self::step4($word);
        $word = self::step5($word);

        return $word;
    }