C31232233133313221211113313331333132313331333133313331333133313311232223131   >>    C3123223313331322121111331333133313231333133313331333133313331331123222313   <<    C31232233133313221211113313331333132313331333133313331333133313311232223133   >>      C31232233133313221211113313331333132313331333133313331333133313311232223132   >>