C1111233131211111211113313331333133313331333133313331333121111331323331123221   >>    C111123313121111121111331333133313331333133313331333133312111133132333112322   <<    C1111233131211111211113313331333133313331333133313331333121111331323331123223   >>      C1111233131211111211113313331333133313331333133313331333121111331323331123222   >>