C111112111133131121133133313331333133313123221211111133131133132233122321   >>    C11111211113313112113313331333133313331312322121111113313113313223312232   <<    C111112111133131121133133313331333133313123221211111133131133132233122323   >>      C111112111133131121133133313331333133313123221211111133131133132233122322   >>