C111112111133131121133133313331333131333132331121111133313232221   >>    C11111211113313112113313331333133313133313233112111113331323222   <<    C111112111133131121133133313331333131333132331121111133313232223   >>      C111112111133131121133133313331333131333132331121111133313232222   >>