C22213331333133313112331323133313331333133313331333133313112211232322121   >>    C2221333133313331311233132313331333133313331333133313331311221123232212   <<    C22213331333133313112331323133313331333133313331333133313112211232322123   >>      C22213331333133313112331323133313331333133313331333133313112211232322122   >>