C11112331333132311331333132313331333131133131133133313223331212111   >>    C1111233133313231133133313231333133313113313113313331322333121211   <<    C11112331333132311331333132313331333131133131133133313223331212113   >>      C11112331333132311331333132313331333131133131133133313223331212112   >>