C111112111133131121133133313331323133313221323331323133313232233231211   >>    C11111211113313112113313331333132313331322132333132313331323223323121   <<    C111112111133131121133133313331323133313221323331323133313232233231213   >>      C111112111133131121133133313331323133313221323331323133313232233231212   >>