1. 猜测:30?可能和不可能 Possibility and impossibility | 31?猜测 Guesses | 第五部分表达情感Expressing Feelings
2. 辈虏:30?笨赡芎筒豢赡? Possibility and impossibility | 31?辈虏? Guesses | 第五部分表达情感Expressing Feelings
3. 叁壹猜测:叁零可能和不可能 Possibility and impossibility | 叁壹猜测 Guesses | 第伍部分表达情感Expressing Feelings