C31232233133313221211113313331333133313113311331333133313331312322221   >>    C3123223313331322121111331333133313331311331133133313331333131232222   <<    C31232233133313221211113313331333133313113311331333133313331312322223   >>      C31232233133313221211113313331333133313113311331333133313331312322222   >>