public function ProcessLearningStatus() {
        switch ($this->Status) {
            case 'learning':
                $this->update(['Status' => Word::FIRST_ITERATION_STATUS, 'FirstIteration' => Carbon::now()]);
                break;
            case Word::FIRST_ITERATION_STATUS:
                $this->update(['Status' => Word::SECOND_ITERATION_STATUS, 'SecondIteration' => Carbon::now()]);
                break;
            case Word::SECOND_ITERATION_STATUS:
                $this->update(['Status' => Word::THIRD_ITERATION_STATUS, 'ThirdIteration' => Carbon::now()]);
                break;
            case Word::THIRD_ITERATION_STATUS:
                $this->update(['Status' => Word::FOURTH_ITERATION_STATUS, 'FourthIteration' => Carbon::now()]);
                break;
            case Word::FOURTH_ITERATION_STATUS:
                $this->update(['Status' => Word::FIFTHS_ITERATION_STATUS, 'FifthsIteration' => Carbon::now()]);
                break;
            case Word::FIFTHS_ITERATION_STATUS:
                $this->update(['Status' => Word::KNOWN_STATUS]);
                break;
            default:
                break;
        }
    }