C31232233133313221211113313331333132313232233133313331322221211   >>    C3123223313331322121111331333133313231323223313331333132222121   <<    C31232233133313221211113313331333132313232233133313331322221213   >>      C31232233133313221211113313331333132313232233133313331322221212   >>