C31232233133313221211113313331333133313331212111111331311331333132223211312121   >>    C3123223313331322121111331333133313331333121211111133131133133313222321131212   <<    C31232233133313221211113313331333133313331212111111331311331333132223211312123   >>      C31232233133313221211113313331333133313331212111111331311331333132223211312122   >>