C31232233133313221211113313331333133313311211231211113313331121133132311311   >>    C3123223313331322121111331333133313331331121123121111331333112113313231131   <<    C31232233133313221211113313331333133313311211231211113313331121133132311313   >>      C31232233133313221211113313331333133313311211231211113313331121133132311312   >>