-ic a-a a-b a-c a-i aaa aab aac aad aai aak aas ab- aba abb abc abd abi abk abs ac- aca acb acc acd aci ack acs ad- ada adb adc add adi adk ads ai- aia aib aic aid aii aik ais aka akb akc akd aki akk aks as- asa asb asc asd asi ask ass baa bab bac bad bai bak bas bba bbb bbc bbd bbi bbk bbs bca bcb bcc bcd bci bck bcs bda bdb bdc bdd bdi bdk bds bi- bia bib bic bid bii bik bis bka bkb bkc bkk bks bsa bsb bsc bsd bsi bsk bss c-- caa cab cac cad cai cak cas cba cbb cbc cbd cbi cbk cbs cca ccb ccc ccd cci cck ccs cda cdb cdc cdd cdi cdk cds ci- cia cib cic cid cii cik cis cka ckb ckc ckd cki cks csa csb csc csd csi csk css daa dab dac dad dai dak das dba dbb dbc dbd dbi dbk dbs dca dcb dcc dcd dci dck dcs dda ddb ddc ddd ddi ddk dds di- dia dib dic did dii dik dis dka dkb dkc dki dkk dks dsa dsb dsc dsd dsi dsk dss i-d ia- iaa iab iac iad iai ias iba ibb ibc ibd ibi ibk ibs ica icb icc icd ici ick ics ida idb idc idd idi idk ids iia iib iic iid iii iis ika ikb ikc iki ikk iks is- isa isb isc isd isi isk iss ka- kaa kab kac kad kai kak kas kba kbb kbc kbd kbi kbk kbs kca kcb kcc kcd kci kck kcs kda kdb kdc kdk kds kia kib kic kid kii kik kis kkb kkc kki kkk kks ksa ksb ksc ksd ksi ksk kss saa sab sac sad sai sak sas sba sbb sbc sbd sbi sbk sbs sca scb scc scd sci sck scs sda sdb sdc sdd sdi sdk sds sia sib sic sid sii sik sis sk- ska skb skc skd ski skk sks ss- ssa ssb ssc ssd ssi ssk sss

a-ak a-ii aaaa aaab aaac aaad aaai aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aack aacs aada aadc aadi aads aaib aaic aaii aais aaka aasa aasc aasd aasi aass abaa abab abac abad abai abak abas abb- abba abbb abbi abbs abca abcb abcc abcd abci abcs abda abdi abia abib abic abid abis abs- absa absd absi abss acaa acab acac acad acai acas acba acca accc accd acci accs acda acdb acdc acdi acds aci- acia acic acid acis ackd acks acsa acsc acsd acsi acss adaa adab adac adad adai adak adas adba adbc adbi adcc adci adcs adda addc addd addi adds adia adib adic adik adis adki adsa adsi adss aiai aias aiba aica aicc aicd aics aida aidb aidc aidi aids aiia aiib aiic aiid aika aiki aiks aisa aisb aisd aisi aisk akaa akai akas akca akia akid akik akis akka akki aksa aksi asaa asab asac asad asai asak asas asba asc- asca ascb ascc asci asda asds asia asic asii asik asis aska aski asks assa assc assd assi assk asss ba-i baaa baad baak baas baba babb babi babs bac- baca bacc baci back bacs bada badb badd badi bads baia baib baic baid baik bais bak- baka baki baks basa basc basi bask bass bbad bbas bbbb bbbs bbci bbdd bcaa bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcsa bcsc bcss bdbc bddc bdii bdsd biad biak bias biba bibb bibi bibs bica bicc bici bick bics bida bidi bids biis bis- bisa bisc bisd bisk biss bsaa bsac bsas bsbd bsci bscs bsic bssc bssd c-cd caaa caab caac caas caba cabi cabs cac- caca cacc caci cack cada cadc cadd cadi cads caia caib caic caid caik cais caka casa casb casc casd casi cask cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdi cbds cbia cbid cbka cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccsa ccsd ccsi ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdis cdss ciaa ciak cias ciba cibc cibi cica cicc cici cics cida cidc cidi cids ciia ciid ciii ciis cika cis- cisa cisc cisd cisk ciss ckac ckbc ckbi ckck ckcs cksa cksb csaa csab csac csak csas cscb cscc cscd csci cscs csda csdb csia csib csid csik csis cska csks cssa cssd daab daad daas daba dabb dabs daca daci dacs dada dadi dads daia daid daik dais daka daki daks dasa dasb dasc dasd dasi dask dass dbas dbcc dbcs dbsa dbss dcas dcbc dcca dccb dccc dcci dccs dcdb dcds dcia dcii dcis dcsc dcss dddd ddss dia- diab diac diad diak dias diba dibb dibs dica dici dick dida didi dids diii diis dika diki dis- disa disc disd disi disk diss dkba dkdc dkid dsac dsba dsbc dscc dscs dsda dssa dssc dssi iaaa iaac iaai iaas iaba iaca iacc iacs iadb iadc iaia iais iasa iasc iasi iask ibac ibad ibas ibca ibcs ibia ibid ibis ibsa ibss icaa icab icac icad icai icas icbc icbd icbs icca iccb iccc icci iccs icdc icdd icis icks icsa icsb icsc icsd icsi icss idad idas idca idda idia idic idid idis idsa idsc idss iiac iias iica iicd iida iiii iiis iisc iisd iisi ikid ikki is-a isac isad isai isak isas isba isbd isca iscc iscd isci iscs isda isdb isdc isds isia isic isis iska issa issc issi isss k-ci k-id kaaa kaab kaai kaak kaas kaba kabb kabc kabd kabi kacb kacc kacd kaci kacs kad- kada kadd kadi kads kaia kaib kaic kaid kaii kaik kais kaka kakc kaki kakk kaks kas- kasa kasb kasc kasi kask kass kbaa kbab kbac kbad kbai kbak kbas kbba kbbb kbbc kbbd