C111123313121111121111331333133313331333112221211111211111211113313132233131   >>    C11112331312111112111133133313331333133311222121111121111121111331313223313   <<    C111123313121111121111331333133313331333112221211111211111211113313132233133   >>      C111123313121111121111331333133313331333112221211111211111211113313132233132   >>