C1111121111331311211331333133313331333133313221211113313331333133313133223121   >>    C111112111133131121133133313331333133313331322121111331333133313331313322312   <<    C1111121111331311211331333133313331333133313221211113313331333133313133223123   >>      C1111121111331311211331333133313331333133313221211113313331333133313133223122   >>