-ic a-a a-b a-c a-i aaa aab aac aad aag aai aak aas ab- aba abb abc abd abg abi abk abs ac- aca acb acc acd acg aci ack acs ad- ada adb adc add adg adi adk ads ag- aga agb agc agd agg agi agk ags ai- aia aib aic aid aig aii aik ais aka akb akc akd akg aki akk aks as- asa asb asc asd asg asi ask ass baa bab bac bad bag bai bak bas bba bbb bbc bbd bbg bbi bbk bbs bca bcb bcc bcd bcg bci bck bcs bda bdb bdc bdd bdg bdi bdk bds bga bgb bgc bgd bgg bgi bgk bgs bi- bia bib bic bid big bii bik bis bka bkb bkc bkg bkk bks bsa bsb bsc bsd bsg bsi bsk bss c-- caa cab cac cad cag cai cak cas cba cbb cbc cbd cbg cbi cbk cbs cca ccb ccc ccd ccg cci cck ccs cda cdb cdc cdd cdg cdi cdk cds cga cgb cgc cgd cgg cgi cgs ci- cia cib cic cid cig cii cik cis cka ckb ckc ckd cki cks csa csb csc csd csg csi csk css daa dab dac dad dag dai dak das dba dbb dbc dbd dbg dbi dbk dbs dca dcb dcc dcd dcg dci dck dcs dda ddb ddc ddd ddg ddi ddk dds dga dgc dgd dgg dgi dgk dgs di- dia dib dic did dig dii dik dis dka dkb dkc dkg dki dkk dks dsa dsb dsc dsd dsg dsi dsk dss g-d gaa gab gac gad gag gai gak gas gba gbc gbd gbg gbi gbk gbs gca gcb gcc gcd gcg gci gck gcs gda gdb gdc gdd gdi gdk gds gga ggb ggc ggd ggg ggi ggs gia gib gic gid gig gii gik gis gka gkb gkd gks gsa gsb gsc gsd gsg gsi gsk gss i-d ia- iaa iab iac iad iag iai ias iba ibb ibc ibd ibg ibi ibk ibs ica icb icc icd icg ici ick ics ida idb idc idd idg idi idk ids iga igb igc igd igg igi igk igs iia iib iic iid iii iis ika ikb ikc iki ikk iks is- isa isb isc isd isg isi isk iss ka- kaa kab kac kad kag kai kak kas kba kbb kbc kbd kbi kbk kbs kca kcb kcc kcd kcg kci kck kcs kda kdb kdc kdg kdk kds kga kgb kgc kgd kgi kgs kia kib kic kid kig kii kik kis kkb kkc kki kkk kks ksa ksb ksc ksd ksg ksi ksk kss saa sab sac sad sag sai sak sas sba sbb sbc sbd sbg sbi sbk sbs sca scb scc scd scg sci sck scs sda sdb sdc sdd sdg sdi sdk sds sga sgb sgc sgd sgg sgi sgk sgs sia sib sic sid sig sii sik sis sk- ska skb skc skd skg ski skk sks ss- ssa ssb ssc ssd ssg 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 abag abai abak abas abb- abba abbb abbi abbs abca abcb abcc abcd abci abcs abda abdi abgd abia abib abic abid abig abis abs- absa absd absi abss acaa acab acac acad acag acai acas acba acca accc accd acci accs acda acdb acdc acdi acds acga acgi acgs aci- acia acic acid acis ackd acks acsa acsc acsd acsi acss adaa adab adac adad adag adai adak adas adba adbc adbi adcc adci adcs adda addc addd addi adds adgs adia adib adic adig adik adis adki adsa adsi adss agac agad agag agai agas agba agca agcc agda agga aggi agia agib agic agid agig agii agis agsa agsg aiai aias aiba aica aicc aicd aics aida aidb aidc aidi aids aiga aiia aiib aiic aiid aika aiki aiks aisa aisb aisd aisg aisi aisk akaa akai akas akca akia akid akik akis akka akki aksa aksi asaa asab asac asad asag asai asak asas asba asc- asca ascb ascc asci asda asds asgd 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 baga bagg bagi bags baia baib baic baid baig baik bais bak- baka baki baks basa basc basi bask bass bbad bbas bbbb bbbs bbci bbdd bbga bcaa bcas bcbc bcbg bcbs bcca bccc bcci bccs bcda bcds bcgs bcia bcis bcsa bcsc bcss bdbc bddc bdii bdsd bgca bggs bgia biad biak bias biba bibb bibi bibs bica bicc bicg bici bick bics bida bidi bids biga bigb bigc bigd bigg bigs biis bis- bisa bisc bisd bisk biss bkgd bsaa bsac bsas bsbd bsci bscs bsgs bsic bssc bssd c-cd caaa caab caac caas caba cabg cabi cabs cac- caca cacc caci cack cada cadc cadd cadi cads caga cagg cagi cags caia caib caic caid caik cais caka casa casb casc casd casi cask cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdi cbds cbga cbgb cbia cbid cbka cbkg cbsa cbsc cbsi ccaa ccab ccac ccad ccag ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccga ccgc ccgs ccic ccid ccii ccis ccsa ccsd ccsg ccsi ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdis cdss cgac cgas cgcc cgcg cggs cgis cgsb cgss ciaa ciak cias ciba cibc cibi cica cicc cici cics cida cidc cidg cidi cids ciga cigi cigs ciia ciid ciii ciis cika cis- cisa cisc cisd cisk ciss ckac ckbc ckbi ckck ckcs ckga cksa cksb csaa csab csac csak csas cscb cscc cscd csci cscs csda csdb csia csib csid csik csis cska csks cssa cssd