C312322331333132212111133133313331323133313221211111333211231211   >>    C31232233133313221211113313331333132313331322121111133321123121   <<    C312322331333132212111133133313331323133313221211111333211231213   >>      C312322331333132212111133133313331323133313221211111333211231212   >>