C31232233133313221211113313331333133313113311331333133313331333231323221311   >>    C3123223313331322121111331333133313331311331133133313331333133323132322131   <<    C31232233133313221211113313331333133313113311331333133313331333231323221313   >>      C31232233133313221211113313331333133313113311331333133313331333231323221312   >>