-ic a-a a-b a-c a-i aaa aab aac aad aai aak aar aas ab- aba abb abc abd abi abk abr abs ac- aca acb acc acd aci ack acr acs ad- ada adb adc add adi adk adr ads ai- aia aib aic aid aii aik air ais aka akb akc akd aki akk akr aks ar- ara arb arc ard ari ark arr ars as- asa asb asc asd asi ask asr ass baa bab bac bad bai bak bar bas bba bbb bbc bbd bbi bbk bbr bbs bca bcb bcc bcd bci bck bcr bcs bda bdb bdc bdd bdi bdk bdr bds bi- bia bib bic bid bii bik bir bis bka bkb bkc bkk bkr bks bra brb brd bri brk brr brs bsa bsb bsc bsd bsi bsk bsr bss c-- caa cab cac cad cai cak car cas cba cbb cbc cbd cbi cbk cbr cbs cca ccb ccc ccd cci cck ccr ccs cda cdb cdc cdd cdi cdk cdr cds ci- cia cib cic cid cii cik cir cis cka ckb ckc ckd cki cks cra crb crc crd cri crk crr crs csa csb csc csd csi csk csr css daa dab dac dad dai dak dar das dba dbb dbc dbd dbi dbk dbr dbs dca dcb dcc dcd dci dck dcr dcs dda ddb ddc ddd ddi ddk ddr dds di- dia dib dic did dii dik dir dis dka dkb dkc dki dkk dkr dks dra drb drc drd dri drk drr drs dsa dsb dsc dsd dsi dsk dsr dss i-d ia- iaa iab iac iad iai iar ias iba ibb ibc ibd ibi ibk ibr ibs ica icb icc icd ici ick icr ics ida idb idc idd idi idk idr ids iia iib iic iid iii iir iis ika ikb ikc iki ikk ikr iks ir- ira irb irc ird iri irk irr irs is- isa isb isc isd isi isk isr iss ka- kaa kab kac kad kai kak kar kas kba kbb kbc kbd kbi kbk kbr kbs kca kcb kcc kcd kci kck kcr kcs kda kdb kdc kdk kdr kds kia kib kic kid kii kik kir kis kkb kkc kki kkk kkr kks kra krc krd kri krk krr krs ksa ksb ksc ksd ksi ksk ksr kss ra- raa rab rac rad rai rak rar ras rba rbb rbc rbd rbi rbk rbr rbs rca rcb rcc rcd rci rcr rcs rda rdb rdc rdd rdi rdr rds ria rib ric rid rii rik rir ris rkb rkc rkk rks rra rrb rrc rrd rri rrk rrr rrs rsa rsb rsc rsd rsi rsk rsr rss saa sab sac sad sai sak sar sas sba sbb sbc sbd sbi sbk sbr sbs sca scb scc scd sci sck scr scs sda sdb sdc sdd sdi sdk sdr sds sia sib sic sid sii sik sir sis sk- ska skb skc skd ski skk skr sks sr- sra srb src srd sri srk srr srs ss- ssa ssb ssc ssd ssi ssk ssr sss

a-ak a-ii aaaa aaab aaac aaad aaai aaar aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aack aacr aacs aada aadc aadi aads aaib aaic aaii aais aaka aara aarc aard aari aars aasa aasc aasd aasi aass abaa abab abac abad abai abak abar abas abb- abba abbb abbi abbr abbs abca abcb abcc abcd abci abcr abcs abda abdi abia abib abic abid abir abis abra abrc abri abrs abs- absa absd absi abss acaa acab acac acad acai acar acas acba acca accc accd acci accs acda acdb acdc acdi acds aci- acia acic acid acir acis ackd acks acr- acra acrc acri acrr acrs acsa acsc acsd acsi acss adaa adab adac adad adai adak adar adas adba adbc adbi adcc adci adcs adda addc addd addi addr adds adia adib adic adik adir adis adki adra adrs adsa adsi adsr adss aiai aias aiba aica aicc aicd aicr aics aida aidb aidc aidi aidr aids aiia aiib aiic aiid aiir aika aiki aiks aira aird airi airs aisa aisb aisd aisi aisk aisr akaa akai akar akas akca akia akid akik akir akis akka akki akr- akra aksa aksi arab arac arad arai arak arar aras arba arbi arbs arc- arca arci arcs arda ardc ardi ards aria arib arid arii arik aris arka arki arks arr- arra arrc arri arrk arrr arrs ars- arsa arsc arsd arsi arsk asaa asab asac asad asai asak asar asas asba asc- asca ascb ascc asci ascr asda asds asia asic asii asik asir asis aska aski askr asks asra asrc asrs assa assc assd assi assk assr asss ba-i baaa baad baak baar baas baba babb babi babr babs bac- baca bacc baci back bacs bada badb badd badi badr bads baia baib baic baid baik bair bais bak- baka baki bakr baks bar- bara barb barc bard bari bark barr bars basa basc basi bask bass bbad bbas bbbb bbbs bbci bbdd bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bdii bdsd biad biak biar bias biba bibb bibi bibs bica bicc bici bick bics bida bidi bidr bids biis bira birb bird biri birk birr birs bis- bisa bisc bisd bisk biss brab brac brad brai brak bras brca brcb brda brds bria bric brid brik bris brka brkb brrr brrs brsb brsr bsaa bsac bsas bsbd bsci bscs bsic bsra bsrd bssc bssd c-cd caaa caab caac caas caba cabi cabs cac- caca cacc caci cack cacr cada cadc cadd cadi cadr cads caia caib caic caid caik cair cais caka cara carb carc card cari cark carr cars casa casb casc casd casi cask casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbdb cbdc cbdi cbds cbia cbid cbir cbka cbkr cbrd cbsa cbsc cbsi ccaa ccab ccac