C31232233133313221211113313331333132313331333133313331333133313331333232223121   >>    C3123223313331322121111331333133313231333133313331333133313331333133323222312   <<    C31232233133313221211113313331333132313331333133313331333133313331333232223123   >>      C31232233133313221211113313331333132313331333133313331333133313331333232223122   >>