C31232233133313221211113313331333132313232233133313331311221123231211   >>    C3123223313331322121111331333133313231323223313331333131122112323121   <<    C31232233133313221211113313331333132313232233133313331311221123231213   >>      C31232233133313221211113313331333132313232233133313331311221123231212   >>