C11112331312111112111133133313331333132323133313331333131232132311321   >>    C1111233131211111211113313331333133313232313331333133313123213231132   <<    C11112331312111112111133133313331333132323133313331333131232132311323   >>      C11112331312111112111133133313331333132323133313331333131232132311322   >>