a-a a-b a-i aaa aab aai aak aao aar aas aav ab- aba abb abi abk abo abr abs abv ai- aia aib aii aik aio air ais aiv aka akb aki akk ako akr aks akv aoa aob aoi aok aoo aor aos aov ar- ara arb ari ark aro arr ars arv as- asa asb asi ask aso asr ass asv av- ava avb avi avk avo avr avs baa bab bai bak bao bar bas bav bba bbb bbi bbk bbo bbr bbs bi- bia bib bii bik bio bir bis biv bka bkb bkk bko bkr bks bkv boa bob boi bok boo bor bos bov bra brb bri brk bro brr brs brv bsa bsb bsi bsk bso bsr bss bsv bva bvb bvi bvk bvo bvr bvs bvv i-v ia- iaa iab iai iao iar ias iav iba ibb ibi ibk ibo ibr ibs ibv iia iib iii iio iir iis ika ikb iki ikk iko ikr iks ikv io- ioa iob ioi ioo ior ios iov ir- ira irb iri irk iro irr irs irv is- isa isb isi isk iso isr iss isv iva ivb ivi ivo ivr ivs ivv ka- kaa kab kai kak kao kar kas kav kba kbb kbi kbk kbo kbr kbs kia kib kii kik kio kir kis kiv kkb kki kkk kkr kks kkv koa kob koi kok koo kor kos kra kri krk kro krr krs krv ksa ksb ksi ksk kso ksr kss ksv kva kvb kvi kvk kvo kvr kvs kvv o-i oaa oab oai oak oao oar oas oav ob- oba obb obi obk obo obr obs obv oia oib oii oik oio oir ois oiv oka okb oki okk oko okr oks oo- ooa oob ooi ook ooo oor oos oov or- ora orb ori ork oro orr ors orv os- osa osb osi osk oso osr oss osv ov- ova ovb ovi ovo ovs ovv ra- raa rab rai rak rao rar ras rav rba rbb rbi rbk rbo rbr rbs ria rib rii rik rio rir ris riv rkb rkk rko rks rkv roa rob roi rok roo ror ros rov rra rrb rri rrk rrr rrs rsa rsb rsi rsk rso rsr rss rsv rva rvb rvi rvo rvr rvs rvv saa sab sai sak sao sar sas sav sba sbb sbi sbk sbo sbr sbs sbv sia sib sii sik sio sir sis siv sk- ska skb ski skk sko skr sks soa sob soi sok soo sor sos sov sr- sra srb sri srk sro srr srs srv ss- ssa ssb ssi ssk sso ssr sss ssv sva svb svi svk svo svr svs svv v-a vaa vab vai vak vao var vas vav vba vbi vbk vbo vbr vbs vbv vi- via vib vii vik vio vir vis viv vka vkb voa vob voi vok voo vor vos vov vra vrb vri vrk vrr vrs vsa vsb vsi vsk vso vsr vss vsv vva vvb vvi vvo vvr vvs vvv

a-ak a-ii a-iv a-ok aaaa aaab aaai aaar aaas aaav aaba aabb aabi aaib aaii aais aaka aaoo aara aari aaro aars aasa aasi aass aava abaa abab abai abak abar abas abb- abba abbb abbi abbo abbr abbs abia abib abir abis aboa abob abok aboo abor abos abov abra abri abro abrs abs- absa absi abss abva aiai aias aiba aibo aiia aiib aiir aika aiki aiko aiks aioi aira airi airo airs aisa aisb aisi aisk aiso aisr aiva akaa akai akao akar akas akia akik akio akir akis akka akki akko akok akos akr- akra aksa aksi aoba aoki aoks aora aorb aors aoss arab arai arak arar aras arba arbi arbs aria arib arii arik ario aris arka arki arko arks aroa arob aroi aroo aror aros arr- arra arri arrk arro arrr arrs ars- arsa arsi arsk arso arva arvi arvo asaa asab asai asak asao asar asas asba asbo asia asii asik asio asir asis aska aski asko askr asks asob asoi asok asor asos asra asro asrs assa assi assk asso assr asss asva asvs avab avao avar avas avia avik avio avis aviv avor avos avra avri avro avva avvo ba-i baaa baak baar baas baba babb babi babo babr babs baia baib baik baio bair bais bak- baka baki bako bakr baks baos bar- bara barb bari bark baro barr bars basa basi bask baso bass bava bavi bbas bbbb bbbs biak biao biar bias biba bibb bibi bibo bibs biis biko bio- bioi bios bira birb biri birk biro birr birs bis- bisa bisk biso biss bivi boab boai boak boar boas boba bobb bobi bobo bobs boi- boii bois boka boki boko boks boob book boor boos bor- bora bori bork boro borr bors bosa bosi bosk boso boss bova bovi bovo brab brai brak brao bras brav bria brik brio bris brka brkb broa brob brok broo bror bros brrr brrs brsb brsr brvi bsaa bsas bsos bsra iaaa iaai iaas iaba iaia iais iara iars iasa iasi iask iaso iasr iava ibar ibas ibia ibis ibos ibra ibri ibro ibsa ibss iias iiii iiio iiis iioi iioo iios iira iirs iisi iisr ikar ikki ikko ikoo ikra ikri ioba iobi ioii ioio ioko iooi iooo ioos iora iori iors ioso irai irak irao irar iras iri- iria irio iris irka irki irks irob irov irra irri irrs irsa irvs is-a isai isak isao isar isas isba isia isis iska isko iso- isok isor isos isra isri issa issi isso issr isss ivai ivak ivao ivar ivbv ivor ivrs k-os kaaa kaab kaai kaak kaar kaas kaba kabb kabi kabo kabr kaia kaib kaii kaik kaio kair kais kaka kaki kakk kako kaks kaoa kaoi kaok kaor kaos kara karb kari kark karo karr kars karv kas- kasa kasb kasi kask kaso kasr kass kava kavb kavi kavo kavs kavv kbaa kbab kbai kbak kbar kbas kbba kbbb kbbi kbbk kbbo kbbr