C31232233133313221211113313331333133313113311331333133323231321   >>    C3123223313331322121111331333133313331311331133133313332323132   <<    C31232233133313221211113313331333133313113311331333133323231323   >>      C31232233133313221211113313331333133313113311331333133323231322   >>