a-a a-b aaa aab aag aak aao aar aaw ab- aba abb abg abk abo abr abw ag- aga agb agg agk ago agr agw aka akb akg akk ako akr akw aoa aob aog aok aoo aor aow ar- ara arb arg ark aro arr arw aw- awa awb awg awk awo awr aww baa bab bag bak bao bar baw bba bbb bbg bbk bbo bbr bbw bga bgb bgg bgk bgo bgr bgw bka bkb bkg bkk bko bkr bkw boa bob bog bok boo bor bow bra brb brg brk bro brr brw bwa bwb bwg bwk bwo bwr gaa gab gag gak gao gar gaw gba gbg gbk gbo gbr gbw gga ggb ggg ggo ggr ggw gka gkb gko goa gob gog gok goo gor gow gra grb grg grk gro grr grw gwa gwb gwg gwk gwr ka- kaa kab kag kak kao kar kaw kba kbb kbk kbo kbr kbw kga kgb kgo kgw kkb kkk kkr koa kob kog kok koo kor kow kra krg krk kro krr krw kw- kwa kwg kwk kwo kww oaa oab oag oak oao oar oaw ob- oba obb obg obk obo obr obw oga ogg ogo oka okb okg okk oko okr okw oo- ooa oob oog ook ooo oor oow or- ora orb org ork oro orr owa owb owk owo oww ra- raa rab rag rak rao rar raw rba rbb rbg rbk rbo rbr rbw rga rgb rgg rgk rgo rgr rgw rkb rkg rkk rko roa rob rog rok roo ror row rra rrb rrg rrk rrr rwa rwb rwr waa wab wag wak wao war waw wba wbb wbg wbo wbr wbw wga wgb wgo wgr wgw wka wkb wkg wko wkr wkw woa wob wog wok woo wor wow wr- wra wrg wrk wro wrr wrw wwa wwo www