C111123313121111121111331323133313331333132333131133133313331333221323321   >>    C11112331312111112111133132313331333133313233313113313331333133322132332   <<    C111123313121111121111331323133313331333132333131133133313331333221323323   >>      C111123313121111121111331323133313331333132333131133133313331333221323322   >>