a-a a-b aaa aab aah aak aao aar aas ab- aba abb abh abk abo abr abs aha ahb ahh ahk aho ahr ahs aka akb akh akk ako akr aks aoa aob aoh aok aoo aor aos ar- ara arb arh ark aro arr ars as- asa asb ash ask aso asr ass baa bab bah bak bao bar bas bba bbb bbh bbk bbo bbr bbs bha bhb bhh bhk bho bhr bhs bka bkb bkk bko bkr bks boa bob boh bok boo bor bos bra brb brh brk bro brr brs bsa bsb bsh bsk bso bsr bss haa hab hah hak hao har has hba hbb hbh hbk hbo hbr hbs hha hhb hhh hhk hho hhr hhs hka hkb hkh hkk hko hkr hks hoa hob hoh hok hoo hor hos hr- hra hrb hrh hrk hro hrr hrs hsa hsb hsh hsk hsr hss ka- kaa kab kah kak kao kar kas kba kbb kbh kbk kbo kbr kbs kha khh khk kho khr khs kkb kkh kkk kkr kks koa kob koh kok koo kor kos kra krk kro krr krs ksa ksb ksh ksk kso ksr kss oaa oab oah oak oao oar oas ob- oba obb obh obk obo obr obs oha ohh oho ohr ohs oka okb okk oko okr oks oo- ooa oob ooh ook ooo oor oos or- ora orb orh ork oro orr ors os- osa osb osh osk oso osr oss ra- raa rab rah rak rao rar ras rba rbb rbh rbk rbo rbr rbs rh- rha rhb rhh rho rhr rhs rkb rkk rko rks roa rob roh rok roo ror ros rra rrb rrh rrk rrr rrs rsa rsb rsh rsk rso rsr rss saa sab sah sak sao sar sas sba sbb sbh sbk sbo sbr sbs sh- sha shb shh shk sho shr shs sk- ska skb skh skk sko skr sks soa sob soh sok soo sor sos sr- sra srb srh srk sro srr srs ss- ssa ssb ssh ssk sso ssr sss

a-ak a-ha a-ok aaaa aaab aaah aaar aaas aaba aabb aabh aaha aahk aahs aaka aaoo aara aaro aars aasa aass abaa abab abak abar abas abb- abba abbb abbo abbr abbs abha abho abhr abhs aboa abob aboh abok aboo abor abos abra abro abrs abs- absa abss ahab ahah ahar ahas ahha ahhs ahoa ahok ahor ahra ahrr ahrs ahsa ahso ahss akaa akah akao akar akas akha akhs akka akko akok akos akr- akra aksa aoah aoba aoks aora aorb aors aoss arab arah arak arar aras arba arbh arbs arh- arhs arka arkh arko arks aroa arob aroo aror aros arr- arra arrh arrk arro arrr arrs ars- arsa arsk arso asaa asab asah asak asao asar asas asba asbo asha ashk ashs aska asko askr asks asob asok asor asos asra asro asrs assa assh assk asso assr asss baaa baah baak baar baas baba babb babo babr babs baha baho bahr bahs bak- baka bakh bako bakr baks baoh baos bar- bara barb barh bark baro barr bars basa bash bask baso bass bbas bbbb bbbs bbhs bhao bhar bhhs bhor bhra bkhs boab boak boar boas boba bobb bobo bobs boha boho bohr bohs boka boko boks boob booh book boor boos bor- bora borh bork boro borr bors bosa bosh bosk boso boss brab brah brak brao bras brhs brka brkb broa brob broh brok broo bror bros brrr brrs brsb brsr bsaa bsas bshs bsos bsra haab haak haar haas haba habo habs haha haho hahs haka hakk hako haks haor hara harh hark haro harr hars hasa hash hask hass hbar hbbs hbhs hbos hbrs hbss hhaa hhhh hhhs hoar hoas hoba hobo hobs hoha hoho hoka hoko hoks hook hoor hoos hora hork horo horr hors hosa hosh hoss hras hrhs hrob hros hrso hsas hshs hsob k-os kaaa kaab kaak kaar kaas kaba kabb kabo kabr kaha kaho kahr kahs kaka kakh kakk kako kaks kaoa kaok kaor kaos kara karb kark karo karr kars kas- kasa kasb kash kask kaso kasr kass kbaa kbab kbak kbar kbas kbba kbbb kbbk kbbo kbbr kbbs kbhb kbhh kbhr kbhs kbkb kbkk kbko kbkr kboa kbob kbok kboo kbos kbra kbrb kbrh kbrk kbro kbsa kbsb kbsk kbso kbsr kbss khab khak khao khar khas khbr khbs khhk khho khhs khka khkk khkr khks khoa khob khok khor khra khrk khro khrr khss kkaa kkar kkba kkbb kkbo kkbr kkbs kkha kkhb kkhh kkhk kkhr kkkk kkoa kkob kkoh kkoo kkor kkrb kkrh kkrk kkro kkrr kkrs kksa kksr kkss koab koak koar koas koba kobb kobk kobo kobr kobs koha kohh koho kohr kohs koka kokb kokh kokk koko kokr koks koob kook kooo koor koos kora korb kork koro korr kors kos- kosa kosb kosh koso kosr koss krab krah krak krar kras krba krbb krbk krbr krhs krka krkh krkk krko krkr krks kroa krob kroh krok kroo kror kros krrb krrk krro krrr krrs krsa krsh krsk krsr krss ksab ksah ksak ksar ksas ksba ksbh ksbr ksbs ksha kshb kshk ksho kshr kshs kska kskb kskk ksko kskr ksks ksob ksok ksoo ksor ksos ksra ksrb ksrh ksro ksrr ksrs kssa ksso kssr ksss oahs oaks oara oars oass obak obas obba obbo obhs obkb obok obor obos obra obrh obro obsr obss ohba ohho ohhs ohob ohoh ohok ohos ohra ohso ohss okak okas okha okka okko okok okor okra okro oksa okso ooaa ooak ooba ooha ooho oohs oooh oooo ooos oora oosa orab orah orak orao orar oras orba orbb orbo orbs orhs orka orko oro- orok oror oros orra orro orrs orsa orsk orso osak osar osas osba osha osho oshs osoo osor osos osro ossa ossb osso raab raak raas raba rabb rabk rabo rabs raha rahr rahs raka rakk raob raoh raok raos rara rarb rark raro rars rasa rash rask raso rass rbbb