a-a a-b a-i aaa aab aad aaf aai aar aas ab- aba abb abd abf abi abr abs ad- ada adb add adf adi adr ads af- afa afb afd aff afi afr afs ai- aia aib aid aif aii air ais ar- ara arb ard arf ari arr ars as- asa asb asd asf asi asr ass baa bab bad baf bai bar bas bba bbb bbd bbf bbi bbr bbs bda bdb bdd bdf bdi bdr bds bfa bfb bfd bff bfi bfr bfs bi- bia bib bid bif bii bir bis bra brb brd brf bri brr brs bsa bsb bsd bsf bsi bsr bss daa dab dad daf dai dar das dba dbb dbd dbf dbi dbr dbs dda ddb ddd ddf ddi ddr dds dfa dfb dfd dff dfi dfr dfs di- dia dib did dif dii dir dis dra drb drd dri drr drs dsa dsb dsd dsf dsi dsr dss faa fab fad faf fai far fas fba fbb fbd fbf fbi fbr fbs fda fdb fdd fdf fdi fdr fds ffa ffd fff ffi ffr ffs fia fib fid fif fii fir fis fra frb frd frf fri frr frs fsa fsb fsd fsf fsi fsr fss i-d i-f ia- iaa iab iad iaf iai iar ias iba ibb ibd ibf ibi ibr ibs ida idb idd idf idi idr ids ifa ifb ifd iff ifi ifr ifs iia iib iid iif iii iir iis ir- ira irb ird irf iri irr irs is- isa isb isd isf isi isr iss ra- raa rab rad raf rai rar ras rba rbb rbd rbf rbi rbr rbs rda rdb rdd rdf rdi rdr rds rfa rfb rfd rff rfi rfr rfs ria rib rid rif rii rir ris rra rrb rrd rrf rri rrr rrs rsa rsb rsd rsf rsi rsr rss saa sab sad saf sai sar sas sba sbb sbd sbf sbi sbr sbs sda sdb sdd sdf sdi sdr sds sfa sfb sfd sff sfi sfr sfs sia sib sid sif sii sir sis sr- sra srb srd srf sri srr srs ss- ssa ssb ssd ssf ssi ssr sss

a-ii aaaa aaab aaad aaaf aaai aaar aaas aaba aabb aabd aabi aada aadi aads aafa aafb aafd aaff aafi aaib aaii aais aara aard aari aars aasa aasd aasf aasi aass abaa abab abad abaf abai abar abas abb- abba abbb abbi abbr abbs abda abdi abff abia abib abid abir abis abra abri abrs abs- absa absd absf absi abss adaa adab adad adai adar adas adba adbi adda addd addi addr adds adfa adfs adia adib adif adir adis adra adrs adsa adsi adsr adss afaa afad afar afbs afdb affa affi affs afia afib afid afif afir afis afr- afra afri afrs afsa afsb aiai aias aiba aida aidb aidi aidr aids aifd aiff aifs aiia aiib aiid aiir aira aird airi airs aisa aisb aisd aisi aisr arab arad araf arai arar aras arba arbi arbs arda ardf ardi ards arfa arfb arff arfs aria arib arid arif arii aris arr- arra arri arrr arrs ars- arsa arsd arsi asaa asab asad asaf asai asar asas asba asda asdf asds asfa asfi asia asif asii asir asis asra asrs assa assd assi assr asss ba-i baaa baad baaf baar baas baba babb babi babr babs bada badb badd badi badr bads baff baia baib baid bair bais bar- bara barb bard barf bari barr bars basa basf basi bass bbad bbas bbbb bbbs bbdd bd-r bdii bdsd bfas bffs bfsi bfsr biad biaf biar bias biba bibb bibi bibs bida bidi bidr bids bifa biff bifi biis bira birb bird biri birr birs bis- bisa bisd biss brab brad braf brai bras brda brds bria brid bris brrr brrs brsb brsr bsaa bsas bsbd bsfa bsff bsfs bsra bsrd bssd daab daad daar daas daba dabb dabs dada dadi dads dafa daff dafi dafs daia daid dair dais dara darb dard darf dari darr dars dasa dasb dasd dasi dass dbar dbas dbfs dbrs dbsa dbss dddd ddss dfaf dfas dfds dffa dfrf dfri dia- diab diad diaf diar dias diba dibb dibs dida didi dids dif- difa diff difs diii diis dira dird dirr dirs dis- disa disd disi diss draa drab drad draf drar dras drba drda drib drif drra drrs drsa dsba dsda dsdr dsfa dsif dsri dsrr dssa dssi faaa faad faas faba fabd fabi fabs fada fadd fadi fads fafa faff fafi faid fair fais fara farb fard farr fars fasa fasd fasi fass fbar fbis fbrs fbsd ffar ffff ffii ffrr ffsa ffss fiaa fiad fiaf fiar fias fiba fibs fida fidf fids fifa fiff fifi fiii fira firs fisa fisd fisi fiss frab frad fras fria frib frid fris frsb fsai fsas fsfi fsia fsra fssa fssf iaaa iaai iaas iaba iadb iaff iaia iais iara iars iasa iasi iasr ibad ibar ibas ibfi ibia ibid ibis ibra ibrd ibri ibsa ibsf ibss idad idar idas idda idfa idia idid idir idis idra idrf idsa idsf idss ifaa ifar ifas ifbb ifda ifid ifis ifra ifrb ifrf ifri ifsa ifsb iias iida iifa iiii iiis iira iirs iisd iisi iisr irad iraf irai irar iras irda irds iri- iria irid iris irra irri irrs irsa irsf is-a isad isaf isai isar isas isba isbd isda isdb isds isfa isia isis isra isri issa issf issi issr isss raab raad raaf raas raba rabb rabi rabs rada radd radr rads rafa raff rafi raia raid raif raii rair rais rara rarb rarf rari rars rasa rasd rasi rass rbaf rbbb rbbr rbbs rbds rbis rbsd rbss rdas rdfa rfdi rfds rfid riaa riab riad riai rias rib- riba ribs rida ridd ridi rids rifa riff rifs riia riif riis riri rirs risa risd risi riss rrad rras rrif rrrr rsaa rsaf rsai rsbi rsdd rsds rsid rsis rssa s-ib s-ii saab saad saaf saar saas saba sabb sabi sabr