C31232233133313221211113313331333132313232233133313331211111212131   >>    C3123223313331322121111331333133313231323223313331333121111121213   <<    C31232233133313221211113313331333132313232233133313331211111212133   >>      C31232233133313221211113313331333132313232233133313331211111212132   >>