C312322331333132212111133133313331323133313233313331333112211232212321   >>    C31232233133313221211113313331333132313331323331333133311221123221232   <<    C312322331333132212111133133313331323133313233313331333112211232212323   >>      C312322331333132212111133133313331323133313233313331333112211232212322   >>