a-a aaa aad aaf aar aaw ad- ada add adf adr adw af- afa afd aff afr afw ar- ara ard arf arr arw aw- awa awd awf awr aww daa dad daf dar daw dda ddd ddf ddr ddw dfa dfd dff dfr dfw dra drd drr drw dwa dwf dwr dww faa fad faf far faw fda fdd fdf fdr ffa ffd fff ffr ffw fra frd frf frr frw fwa fwd fwf ra- raa rad raf rar raw rda rdd rdf rdr rfa rfd rff rfr rfw rra rrd rrf rrr rwa rwd rwf rwr waa wad waf war waw wda wdf wdr wfa wfd wff wfr wfw wr- wra wrd wrf wrr wrw wwa wwd wwf www