C31232233133313221211113313331311331333133313113313331322131221   >>    C3123223313331322121111331333131133133313331311331333132213122   <<    C31232233133313221211113313331311331333133313113313331322131223   >>      C31232233133313221211113313331311331333133313113313331322131222   >>