Saikawa and Nishinosono return to the camp, putting off trying to find a solution to the case. But they can't stop thinking about it. They go back to the lab and investigate Dr. Shiki's rooms again, where they find a strange number that is a clue.
could each write messages in such a short time.
.قد تكتب رسالة في وقتٍ قصيرٍ كهذا
wenn in dieser kurzen Zeit …
pour écrire ces messages
en peu de temps.
ciascuna un messaggio in breve tempo
cada uma das personalidades 
pudesse escrever uma mensagem.