a-a a-b a-i aaa aab aai aao aar aas ab- aba abb abi abo abr abs ai- aia aib aii aio air ais aoa aob aoi aoo aor aos ar- ara arb ari aro arr ars as- asa asb asi aso asr ass baa bab bai bao bar bas bba bbb bbi bbo bbr bbs bi- bia bib bii bio bir bis boa bob boi boo bor bos bra brb bri bro brr brs bsa bsb bsi bso bsr bss ia- iaa iab iai iao iar ias iba ibb ibi ibo ibr ibs iia iib iii iio iir iis io- ioa iob ioi ioo ior ios ir- ira irb iri iro irr irs is- isa isb isi iso isr iss o-i oaa oab oai oao oar oas ob- oba obb obi obo obr obs oia oib oii oio oir ois oo- ooa oob ooi ooo oor oos or- ora orb ori oro orr ors os- osa osb osi oso osr oss ra- raa rab rai rao rar ras rba rbb rbi rbo rbr rbs ria rib rii rio rir ris roa rob roi roo ror ros rra rrb rri rrr rrs rsa rsb rsi rso rsr rss saa sab sai sao sar sas sba sbb sbi sbo sbr sbs sia sib sii sio sir sis soa sob soi soo sor sos sr- sra srb sri sro srr srs ss- ssa ssb ssi sso ssr sss

a-ii aaaa aaab aaai aaar aaas aaba aabb aabi aaib aaii aais aaoo aara aari aaro aars aasa aasi aass abaa abab abai abar abas abb- abba abbb abbi abbo abbr abbs abia abib abir abis aboa abob aboo abor abos abra abri abro abrs abs- absa absi abss aiai aias aiba aibo aiia aiib aiir aioi aira airi airo airs aisa aisb aisi aiso aisr aoba aora aorb aors aoss arab arai arar aras arba arbi arbs aria arib arii ario aris aroa arob aroi aroo aror aros arr- arra arri arro arrr arrs ars- arsa arsi arso asaa asab asai asao asar asas asba asbo asia asii asio asir asis asob asoi asor asos asra asro asrs assa assi asso assr asss ba-i baaa baar baas baba babb babi babo babr babs baia baib baio bair bais baos bar- bara barb bari baro barr bars basa basi baso bass bbas bbbb bbbs biao biar bias biba bibb bibi bibo bibs biis bio- bioi bios bira birb biri biro birr birs bis- bisa biso biss boab boai boar boas boba bobb bobi bobo bobs boi- boii bois boob boor boos bor- bora bori boro borr bors bosa bosi boso boss brab brai brao bras bria brio bris broa brob broo bror bros brrr brrs brsb brsr bsaa bsas bsos bsra iaaa iaai iaas iaba iaia iais iara iars iasa iasi iaso iasr ibar ibas ibia ibis ibos ibra ibri ibro ibsa ibss iias iiii iiio iiis iioi iioo iios iira iirs iisi iisr ioba iobi ioii ioio iooi iooo ioos iora iori iors ioso irai irao irar iras iri- iria irio iris irob irra irri irrs irsa is-a isai isao isar isas isba isia isis iso- isor isos isra isri issa issi isso issr isss oais oara oars oasi oass obai obas obba obbo obia obis oboi obor obos obra obri obro obsr obss oiba oiii oios oira ooaa ooba oobi ooia oooo ooos oora oosa oosi orab orai orao orar oras orba orbb orbi orbo orbs ori- oria orio oris oro- oror oros orra orri orro orrs orsa orsi orso osai osar osas osba osia osii osis osoi osoo osor osos osro ossa ossb ossi osso raab raas raba rabb rabi rabo rabs raia raii rair rais raob raos rara rarb rari raro rars rasa rasi raso rass rbbb rbbr rbbs rbis rbss riaa riab riai rias rib- riba ribo ribs riia riis rios riri rirs risa risi riso riss roab roar roas rob- roba robb robi robo robs roia roio roir rois roob rooi roor roos rora rori roro rosa rosi roso ross rras rrrr rsaa rsai rsbi rsis rsos rssa s-ib s-ii s-os saab saar saas saba sabb sabi sabo sabr sabs saia sair sais saoi saor saos sara sari saro sarr sars sasa sasi saso sass sbaa sbai sbar sbas sbbs sbia sbor sbsa sbsi siaa siab siai sias siba sibi sibo sibs sior sios sira siri siro sirr sirs sisa sisi siss soar soas soba sobo sobr sobs soia soir sois soor soos sora sorb sori soro sorr sors sosa sosi soso soss sras srib sris sros ssaa ssab ssao ssas ssbr ssis ssra ssri ssrs sssa sssb sssi ssss

-aaa- a-iii aaaai aaaas aaais aaasa aaass aabaa aabba aabra aaiib aaria aasai aasia aasra abaab ababa ababs abaia abair abara abari abasa abasi abass abbai abbar abbas abbia abbos abbrs abias abibs abio- abira abirs abiss aboab abobo abora aboso abrar abras abris absar absis aiaia aibar aiboa aibos airai airba airis airor airsa airss aisai aissa aisso aoos aorsi ar-ab arab- araba arabi arabo arabs araia arara arari arars arass arbab arbar arbas arbia arbib arbir arbis arbor arbos ariab arias aribo arioi arios arisa ariss aroab aroar aroba aroor aroos arora arosa arrai arras arria arris arros arsia arsis arsos as-is asaba asaia asaio asair asara asari asaro asasa asbis asbos asbri asbro asiab asias asios asira asoar asobi asors asosa asrai asrar asror assab assai assas assia assio assir assis assoa assos baari baars babai babar babas babbs babia babio baboo babos babra baiao baiba baira bairo baisa baisi baiso baori baoro baraa barab barai barao barar baras barba barbi barbs bari- baria bario baris baro- baroa baroi baroo baror baros barra barri barro barrs barsa barsi barss basab basai basar basi- basia basir basis baso- basor basra basri bassa bassi basso bbiab biara biari biasi bibar bibas bibbo bibbs bibia bibio bibis bibos bibra bibri bioss birao birar biras birba biros birrs bisas bisra bissa bo-bo boaro boars bobar bobbi bobos bobr bobri boiai