C31232233133313221211113313331333133313113311331333133313331333233132223131   >>    C3123223313331322121111331333133313331311331133133313331333133323313222313   <<    C31232233133313221211113313331333133313113311331333133313331333233132223133   >>      C31232233133313221211113313331333133313113311331333133313331333233132223132   >>