C31232233133313221211113313331333132313232233133313332112322221   >>    C3123223313331322121111331333133313231323223313331333211232222   <<    C31232233133313221211113313331333132313232233133313332112322223   >>      C31232233133313221211113313331333132313232233133313332112322222   >>