C312312111111331312111133133313231333131133132231333133313331323213232111211   >>    C31231211111133131211113313331323133313113313223133313331333132321323211121   <<    C312312111111331312111133133313231333131133132231333133313331323213232111213   >>      C312312111111331312111133133313231333131133132231333133313331323213232111212   >>