C31232233133313221211113313331333133313113311331333133313113313233112233321   >>    C3123223313331322121111331333133313331311331133133313331311331323311223332   <<    C31232233133313221211113313331333133313113311331333133313113313233112233323   >>      C31232233133313221211113313331333133313113311331333133313113313233112233322   >>