C31232233133313221211113313331333133313331212111112111113221312121   >>    C3123223313331322121111331333133313331333121211111211111322131212   <<    C31232233133313221211113313331333133313331212111112111113221312123   >>      C31232233133313221211113313331333133313331212111112111113221312122   >>