C11112331333132311331333133313331333112211231211113313223313133322321   >>    C1111233133313231133133313331333133311221123121111331322331313332232   <<    C11112331333132311331333133313331333112211231211113313223313133322323   >>      C11112331333132311331333133313331333112211231211113313223313133322322   >>