a-a a-b aaa aab aad aah aak aao aar aaw ab- aba abb abd abh abk abo abr abw ad- ada adb add adh adk ado adr adw aha ahb ahd ahh ahk aho ahr ahw aka akb akd akh akk ako akr akw aoa aob aod aoh aok aoo aor aow ar- ara arb ard arh ark aro arr arw aw- awa awb awd awh awk awo awr aww baa bab bad bah bak bao bar baw bba bbb bbd bbh bbk bbo bbr bbw bda bdb bdd bdh bdk bdo bdr bdw bha bhb bhd bhh bhk bho bhr bhw bka bkb bkk bko bkr bkw boa bob bod boh bok boo bor bow bra brb brd brh brk bro brr brw bwa bwb bwd bwh bwk bwo bwr daa dab dad dah dak dao dar daw dba dbb dbd dbh dbk dbo dbr dda ddb ddd ddh ddk ddo ddr ddw dh- dha dhb dhd dhh dhk dho dhr dhw dka dkb dkk dko dkr dkw doa dob dod doh dok doo dor dow dra drb drd drk dro drr drw dwa dwb dwh dwo dwr dww haa hab had hah hak hao har haw hba hbb hbd hbh hbk hbo hbr hbw hda hdb hdd hdh hdk hdo hdr hdw hha hhb hhd hhh hhk hho hhr hhw hka hkb hkd hkh hkk hko hkr hkw hoa hob hod hoh hok hoo hor how hr- hra hrb hrd hrh hrk hro hrr hrw hw- hwa hwb hwd hwk hwo hwr hww ka- kaa kab kad kah kak kao kar kaw kba kbb kbd kbh kbk kbo kbr kbw kda kdb kdh kdk kdo kdr kha khh khk kho khr kkb kkh kkk kkr koa kob kod koh kok koo kor kow kra krd krk kro krr krw kw- kwa kwd kwh kwk kwo kww oaa oab oad oah oak oao oar oaw ob- oba obb obd obh obk obo obr obw oda odb odd odh odo odr oha ohd ohh oho ohr oka okb okd okk oko okr okw oo- ooa oob ood ooh ook ooo oor oow or- ora orb ord orh ork oro orr owa owb owd owh owk owo oww ra- raa rab rad rah rak rao rar raw rba rbb rbd rbh rbk rbo rbr rbw rda rdb rdd rdh rdo rdr rh- rha rhb rhd rhh rho rhr rkb rkk rko roa rob rod roh rok roo ror row rra rrb rrd rrh rrk rrr rwa rwb rwd rwh rwr waa wab wad wah wak wao war waw wba wbb wbd wbo wbr wbw wda wdb wdr wh- wha whb whd whh whk who whr whw wka wkb wkd wko wkr wkw woa wob wod woh wok woo wor wow wr- wra wrd wrh wrk wro wrr wrw wwa wwd wwo www