C31232233133313221211113313331333133313311211231211113313331133112121121   >>    C3123223313331322121111331333133313331331121123121111331333113311212112   <<    C31232233133313221211113313331333133313311211231211113313331133112121123   >>      C31232233133313221211113313331333133313311211231211113313331133112121122   >>