C22213331333133313112331323133313331333133313233211113311212311   >>    C2221333133313331311233132313331333133313331323321111331121231   <<    C22213331333133313112331323133313331333133313233211113311212313   >>      C22213331333133313112331323133313331333133313233211113311212312   >>