C1111233131211111211113313331333133313331333133313331333133313112211213131   >>    C111123313121111121111331333133313331333133313331333133313331311221121313   <<    C1111233131211111211113313331333133313331333133313331333133313112211213133   >>      C1111233131211111211113313331333133313331333133313331333133313112211213132   >>