a-a a-b a-i aaa aab aai aak aao aap aar ab- aba abb abi abk abo abp abr ai- aia aib aii aik aio aip air aka akb aki akk ako akp akr aoa aob aoi aok aoo aop aor ap- apa apb api apk apo app apr ar- ara arb ari ark aro arp arr b-p baa bab bai bak bao bap bar bba bbb bbi bbk bbo bbp bbr bi- bia bib bii bik bio bip bir bka bkb bkk bko bkp bkr boa bob boi bok boo bop bor bpa bpb bpi bpo bpp bpr bra brb bri brk bro brp brr ia- iaa iab iai iao iap iar iba ibb ibi ibk ibo ibp ibr iia iib iii iio iip iir ika ikb iki ikk iko ikr io- ioa iob ioi ioo iop ior ipa ipb ipi ipo ipp ipr ir- ira irb iri irk iro irp irr ka- kaa kab kai kak kao kap kar kba kbb kbi kbk kbo kbp kbr kia kib kii kik kio kip kir kkb kki kkk kkp kkr koa kob koi kok koo kop kor kpa kpi kpk kpo kpp kpr kra kri krk kro krp krr o-i oaa oab oai oak oao oap oar ob- oba obb obi obk obo obp obr oia oib oii oik oio oip oir oka okb oki okk oko okp okr oo- ooa oob ooi ook ooo oop oor op- opa opb opi opk opo opp opr or- ora orb ori ork oro orp orr p-p paa pab pai pak pao pap par pba pbb pbi pbk pbo pbp pbr pia pib pii pik pio pip pir pka pkb pki pko pkp pkr poa pob poi pok poo pop por ppa ppb ppi ppk ppo ppp ppr pra prb pri prk pro prp prr ra- raa rab rai rak rao rap rar rba rbb rbi rbk rbo rbp rbr ria rib rii rik rio rip rir rkb rkk rko rkp roa rob roi rok roo rop ror rpa rpb rpi rpk rpo rpp rpr rra rrb rri rrk rrp rrr

a-ak a-ii a-ok aaaa aaab aaai aaap aaar aaba aabb aabi aabp aaib aaii aaka aaoo aapa aapi aapo aara aari aaro aarp abaa abab abai abak abap abar abb- abba abbb abbi abbo abbr abia abib abir aboa abob abok aboo abor abpa abpi abpp abpr abra abri abro aiai aiba aibo aiia aiib aiir aika aiki aiko aioi aipa aipi aira airi airo airp akaa akai akao akap akar akia akik akio akir akka akki akko akok akpo akr- akra aoba aoki aokp aopo aora aorb apai apak apao apap apar apba apbr api- apia apio apip apo- apoo apop apor appa appr apra apri apro arab arai arak arap arar arba arbi aria arib arii arik ario arip arka arki arko aroa arob aroi aroo aror arpa arpi arr- arra arri arrk arro arrr ba-i baaa baak baar baba babb babi babo babr baia baib baik baio bair bak- baka baki bako bakr bapa bapi bapp bar- bara barb bari bark baro barr bbbb bbpr biak biao biap biar biba bibb bibi bibo biko bio- bioi bipa bipp bira birb biri birk biro birr bkpr boab boai boak boar boba bobb bobi bobo boi- boii boka boki boko boob book boop boor bopa bopp bor- bora bori bork boro borr bpai brab brai brak brao bria brik brio brka brkb broa brob brok broo bror brrr iaaa iaai iaap iaba iaia iapa iapp iara ibar ibia ibra ibri ibro iiii iiio iioi iioo iiop iipa iira ikar ikki ikko ikoo ikra ikri ioba iobi ioii ioio ioko iooi iooo iora iori ipak ipba ipbk ipko ipop ippa ippo ippr ipri irai irak irao irap irar irbp iri- iria irio irip irka irki irob irop irpa irra irri kaaa kaab kaai kaak kaap kaar kaba kabb kabi kabo kabr kaia kaib kaii kaik kaio kaip kair kaka kaki kakk kako kaoa kaoi kaok kaor kap- kapa kapi kapo kapp kara karb kari kark karo karp karr kbaa kbab kbai kbak kbap kbar kbba kbbb kbbi kbbk kbbo kbbr kbia kbib kbik kbio kbkb kbkk kbko kbkr kboa kbob kboi kbok kboo kbpa kbpi kbpk kbpo kbpr kbra kbrb kbri kbrk kbro kiab kiai kiap kiar kiba kibb kibi kibo kibr kiia kiii kiik kiip kika kiki kikk kiko kikr kioa kioi kiok kioo kip- kipa kipi kipo kipp kipr kira kirb kiri kirk kiro kirp kirr kkaa kkai kkap kkar kkba kkbb kkbi kkbo kkbr kkia kkik kkkk kkoa kkob kkoo kkor kkpk kkrb kkrk kkro kkrr koab koai koak koap koar koba kobb kobi kobk kobo kobr koii koir koka kokb koki kokk koko kokp kokr koob kooi kook kooo koop koor kopa kopb kopi kopp kopr kora korb kori kork koro korr kpak kpao kpar kpba kpbb kpbi kpbr kpia kpir kpkk kpkr kpoa kpob kpok kpoo kpop kppk kppo kppp kppr kprb kpri kprk kpro kprp kprr krab krai krak krap krar krba krbb krbi krbk krbr kria krib krik krio krka krki krkk krko krkr kroa krob kroi krok kroo krop kror krpa krpi krpr krrb krri krrk krro krrr oapi oara obai obak obba obbo obia obkb oboi obok obor obra obri obro oiba oiii oiko oira okak okap okia okir okka okko okok okor okpo okra okro ooaa ooak ooba oobi ooia oooo oora opap opar opia opii opio opo- opor oppa oppi oppo opra orab orai orak orao orar orba orbb orbi orbo ori- oria orio orka orko oro- orok oror orpi orra orri orro paak paap paar paba paia paib paik paio paip pair paka paki pako papa papb papi papp papr par- para pari park paro parp parr pbar pbpa pbpk piai piao pibb pibi piia piip pika piki pikk piko piob pipa pipi pipo pipp pira piri pirk piro pirr pkia pkib poak poar poba pobo poia poik poio poka poko pook poop poor pop- popa popi popo popp pora porb