C31232233133313221211113313331333132313232233133313331311223132323213221   >>    C3123223313331322121111331333133313231323223313331333131122313232321322   <<    C31232233133313221211113313331333132313232233133313331311223132323213223   >>      C31232233133313221211113313331333132313232233133313331311223132323213222   >>