private function step2()
    {
        // dd   gd   nn   dt   gt   kt   tt
        if ($this->searchIfInR1(array('dd', 'gd', 'nn', 'dt', 'gt', 'kt', 'tt')) !== false) {
            $this->word = Utf8::substr($this->word, 0, -1);
        }
    }