C31232233133313221211113313331333133313113311331333133313113313232321333231   >>    C3123223313331322121111331333133313331311331133133313331311331323232133323   <<    C31232233133313221211113313331333133313113311331333133313113313232321333233   >>      C31232233133313221211113313331333133313113311331333133313113313232321333232   >>