a-a a-b a-i aaa aab aai aao aar aas aav ab- aba abb abi abo abr abs abv ai- aia aib aii aio air ais aiv aoa aob aoi aoo aor aos aov ar- ara arb ari aro arr ars arv as- asa asb asi aso asr ass asv av- ava avb avi avo avr avs baa bab bai bao bar bas bav bba bbb bbi bbo bbr bbs bi- bia bib bii bio bir bis biv boa bob boi boo bor bos bov bra brb bri bro brr brs brv bsa bsb bsi bso bsr bss bsv bva bvb bvi bvo bvr bvs bvv i-v ia- iaa iab iai iao iar ias iav iba ibb ibi ibo ibr ibs ibv iia iib iii iio iir iis io- ioa iob ioi ioo ior ios iov ir- ira irb iri iro irr irs irv is- isa isb isi iso isr iss isv iva ivb ivi ivo ivr ivs ivv o-i oaa oab oai oao oar oas oav ob- oba obb obi obo obr obs obv oia oib oii oio oir ois oiv oo- ooa oob ooi ooo oor oos oov or- ora orb ori oro orr ors orv os- osa osb osi oso osr oss osv ov- ova ovb ovi ovo ovs ovv ra- raa rab rai rao rar ras rav rba rbb rbi rbo rbr rbs ria rib rii rio rir ris riv roa rob roi roo ror ros rov rra rrb rri rrr rrs rsa rsb rsi rso rsr rss rsv rva rvb rvi rvo rvr rvs rvv saa sab sai sao sar sas sav sba sbb sbi sbo sbr sbs sbv sia sib sii sio sir sis siv soa sob soi soo sor sos sov sr- sra srb sri sro srr srs srv ss- ssa ssb ssi sso ssr sss ssv sva svb svi svo svr svs svv v-a vaa vab vai vao var vas vav vba vbi vbo vbr vbs vbv vi- via vib vii vio vir vis viv voa vob voi voo vor vos vov vra vrb vri vrr vrs vsa vsb vsi vso vsr vss vsv vva vvb vvi vvo vvr vvs vvv

a-ii a-iv aaaa aaab aaai aaar aaas aaav aaba aabb aabi aaib aaii aais aaoo aara aari aaro aars aasa aasi aass aava abaa abab abai abar abas abb- abba abbb abbi abbo abbr abbs abia abib abir abis aboa abob aboo abor abos abov abra abri abro abrs abs- absa absi abss abva aiai aias aiba aibo aiia aiib aiir aioi aira airi airo airs aisa aisb aisi aiso aisr aiva 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 arva arvi arvo 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 asva asvs avab avao avar avas avia avio avis aviv avor avos avra avri avro avva avvo 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 bava bavi 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 bivi 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 bova bovi bovo brab brai brao bras brav bria brio bris broa brob broo bror bros brrr brrs brsb brsr brvi bsaa bsas bsos bsra iaaa iaai iaas iaba iaia iais iara iars iasa iasi iaso iasr iava 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 irov irra irri irrs irsa irvs is-a isai isao isar isas isba isia isis iso- isor isos isra isri issa issi isso issr isss ivai ivao ivar ivbv ivor ivrs oais oara oars oasi oass oavs obai obas obba obbo obia obis oboi obor obos obra obri obro obsr obss obvi obvs oiav oiba oiii oios oira ooaa ooba oobi ooia oooo ooos oora oosa oosi orab orai orao orar oras orav orba orbb orbi orbo orbs ori- oria orio oris oro- oror oros orra orri orro orrs orsa orsi orso orvr orvs osai osar osas osba osia osii osis osoi osoo osor osos osov osro ossa ossb ossi osso ovar ovi- ovis ovo- ovoo ovra raab raas raba rabb rabi rabo rabs raia raii rair rais raob raos rara rarb rari raro rars rasa rasi raso rass rava ravi rbbb rbbr rbbs rbis rbss riaa riab riai rias rib- riba ribo ribs riia riis rios riri rirs risa risi riso riss riva rivo rivs roab roar roas rob- roba robb robi robo robs roia roio roir rois roob rooi roor roos rora rori roro rosa rosi roso ross rova rovi rovo rovs rras rrrr rsaa rsai rsbi rsis rsos rssa s-ib s-ii s-iv s-os saab saar saas saba sabb sabi sabo sabr sabs saia sair sais saiv saoi saor saos sara sari saro sarr sars sarv sasa sasi saso sass sava savi savo savs 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 siva sivi soar soas soba sobo sobr sobs soia soir sois soor soos sora sorb sori soro sorr sors sosa sosi soso soss sosv sova sovo sovs sras srib sris sros ssaa ssab ssao ssas ssbr ssis ssra ssri ssrs sssa sssb sssi ssss svar svir svor vaar vaas vabs vaia vaio vair vais vara vari varr vars vas- vasa vasi vaso vass vava vavs viar vias vibs viii vios vira