C111112111133131121133133313331333131133133313331322331333132212121   >>    C11111211113313112113313331333133313113313331333132233133313221212   <<    C111112111133131121133133313331333131133133313331322331333132212123   >>      C111112111133131121133133313331333131133133313331322331333132212122   >>