C1111233131211111211113313331333133313231323331333133313221212131   >>    C111123313121111121111331333133313331323132333133313331322121213   <<    C1111233131211111211113313331333133313231323331333133313221212133   >>      C1111233131211111211113313331333133313231323331333133313221212132   >>