a-a a-b a-i aaa aab aag aai aak aar aas ab- aba abb abg abi abk abr abs ag- aga agb agg agi agk agr ags ai- aia aib aig aii aik air ais aka akb akg aki akk akr aks ar- ara arb arg ari ark arr ars as- asa asb asg asi ask asr ass baa bab bag bai bak bar bas bba bbb bbg bbi bbk bbr bbs bga bgb bgg bgi bgk bgr bgs bi- bia bib big bii bik bir bis bka bkb bkg bkk bkr bks bra brb brg bri brk brr brs bsa bsb bsg bsi bsk bsr bss gaa gab gag gai gak gar gas gba gbg gbi gbk gbr gbs gga ggb ggg ggi ggr ggs gia gib gig gii gik gir gis gka gkb gks gra grb grg gri grk grr grs gsa gsb gsg gsi gsk gsr gss ia- iaa iab iag iai iar ias iba ibb ibg ibi ibk ibr ibs iga igb igg igi igk igr igs iia iib iii iir iis ika ikb iki ikk ikr iks ir- ira irb irg iri irk irr irs is- isa isb isg isi isk isr iss ka- kaa kab kag kai kak kar kas kba kbb kbi kbk kbr kbs kga kgb kgi kgs kia kib kig kii kik kir kis kkb kki kkk kkr kks kra krg kri krk krr krs ksa ksb ksg ksi ksk ksr kss ra- raa rab rag rai rak rar ras rba rbb rbg rbi rbk rbr rbs rga rgb rgg rgi rgk rgr rgs ria rib rig rii rik rir ris rkb rkg rkk rks rra rrb rrg rri rrk rrr rrs rsa rsb rsg rsi rsk rsr rss saa sab sag sai sak sar sas sba sbb sbg sbi sbk sbr sbs sga sgb sgg sgi sgk sgr sgs sia sib sig sii sik sir sis sk- ska skb skg ski skk skr sks sr- sra srb srg sri srk srr srs ss- ssa ssb ssg ssi ssk ssr sss

a-ak a-ii aaaa aaab aaai aaar aaas aaba aabb aabi aaib aaii aais aaka aara aari aars aasa aasi aass abaa abab abag abai abak abar abas abb- abba abbb abbi abbr abbs abia abib abig abir abis abra abri abrs abs- absa absi abss agag agai agar agas agba agga aggi agia agib agig agii agir agis agra agri agsa agsg aiai aias aiba aiga aiia aiib aiir aika aiki aiks aira airi airs aisa aisb aisg aisi aisk aisr akaa akai akar akas akia akik akir akis akka akki akr- akra aksa aksi arab arag arai arak arar aras arba arbi arbs arga argb argi args aria arib arig arii arik aris arka arki arks arr- arra arrg arri arrk arrr arrs ars- arsa arsi arsk asaa asab asag asai asak asar asas asba asia asii asik asir asis aska aski askr asks asra asrg asrs assa assi assk assr asss ba-i baaa baak baar baas baba babb babi babr babs baga bagg bagi bags baia baib baig baik bair bais bak- baka baki bakr baks bar- bara barb barg bari bark barr bars basa basi bask bass bbas bbbb bbbs bbga bbrg bggs bgia biak biar bias biba bibb bibi bibs biga bigb bigg bigs biis bira birb birg biri birk birr birs bis- bisa bisk biss brab brag brai brak bras bria brig brik bris brka brkb brrr brrs brsb brsr bsaa bsas bsgs bsra gaar gaas gaba gabb gabi gabr gabs gaga gagg gagi gags gaia gaig gair gais gaki gara garb garg gari garr gars gasa gasb gasi gask gasr gass gbag gbas gbbs gggg ggss giaa giai gias giba gibb gibs giga gigg gigi gigs giis gira girg giri girk girr girs gisa giss grab grai gras grbr gria grib grig gris grrr grrs grss gsab gsis gskb iaaa iaai iaas iaba iags iaia iais iara iars iasa iasi iask iasr ibar ibas ibga ibia ibis ibra ibri ibsa ibss igar igas igba igga iggs igia igis igra igri iias iiii iiis iira iirs iisi iisr ikar ikig ikki ikra ikri irai irak irar iras irgs iri- iria irig iris irka irki irks irra irri irrs irsa irsg is-a isai isak isar isas isba isia isis iska isra isrg isri issa issi issr isss kaaa kaab kaag kaai kaak kaar kaas kaba kabb kabg kabi kabr kag- kaga kagb kagg kagi kagr kags kaia kaib kaig kaii kaik kair kais kaka kaki kakk kaks kara karb karg kari kark karr kars kas- kasa kasb kasi kask kasr kass kbaa kbab kbai kbak kbar kbas kbba kbbb kbbg kbbi kbbk kbbr kbbs kbga kbgb kbgg kbgr kbia kbib kbig kbik kbis kbkb kbkg kbkk kbkr kbra kbrb kbrg kbri kbrk kbsa kbsb kbsg kbsi kbsk kbsr kbss kgab kgak kgas kgba kgbb kgbr kgga kggg kggi kggr kgia kgir kgks kgra kgrb kgrg kgri kgrk kgrr kgrs kgsr kiab kiai kiar kias kiba kibb kibg kibi kibr kibs kiga kigs kiia kiii kiik kiis kika kiki kikk kikr kira kirb kiri kirk kirr kirs kisa kisi kisk kisr kiss kkaa kkag kkai kkar kkba kkbb kkbg kkbi kkbr kkbs kkgb kkgr kkia kkik kkkk kkrb kkrk kkrr kkrs kksa kksi kksr kkss krab krag krai krak krar kras krba krbb krbg krbi krbk krbr krgi krgs kria krib krik kris krka krki krkk krkr krks krrb krrg krri krrk krrr krrs krsa krsk krsr krss ksab ksak ksar ksas ksba ksbi ksbr ksbs ksgg ksgr ksib ksig ksii ksik ksir ksis kska kskb kskg kskk kskr ksks ksra ksrb ksrg ksrr ksrs kssa kssi kssr ksss raab raag raak raas raba rabb rabi rabk rabs raga ragg ragi rags raia raig raii raik rair rais raka raki rakk rara rarb rari rark rars rasa rasi rask rass rbbb rbbr rbbs rbis rbss rgba rgbi riaa riab riai riak rias rib- riba ribs riga rigg rigi rigs riia riis rika riki rikk riri rirs risa risi