a-a a-c aaa aac aaf aak aan aao aar aas ac- aca acc acf ack acn aco acr acs af- afa afc aff afk afn afo afr afs aka akc akk akn ako akr aks an- ana anc anf ank ann ano anr ans aoa aoc aof aok aon aoo aor aos ar- ara arc arf ark arn aro arr ars as- asa asc asf ask asn aso asr ass c-- caa cac caf cak can cao car cas cca ccc ccf cck ccn cco ccr ccs cfa cfc cff cfk cfn cfo cfr cfs cka ckc cko cks cn- cna cnc cnf cnn cno cnr cns co- coa coc cof cok con coo cor cos cra crc crf crk crn cro crr crs csa csc csf csk csn cso csr css faa fac faf fak fan fao far fas fca fcc fcf fck fcn fco fcr fcs ffa ffc fff ffk ffn ffo ffr ffs fka fkc fkf fkk fna fnc fnf fnk fnn fnr fns foa foc fof fok fon foo for fos fra frc frf frk frn fro frr frs fsa fsc fsf fsk fsn fso fsr fss ka- kaa kac kaf kak kan kao kar kas kca kcc kck kcn kcr kcs kfa kfc kff kfo kfs kkc kkk kkn kkr kks kn- kna knc knf knk knn kno knr koa koc kof kok kon koo kor kos kra krc krf krk krn kro krr krs ksa ksc ksf ksk ksn kso ksr kss naa nac naf nak nan nao nar nas nca ncc ncf nck ncn nco ncr ncs nfa nfc nff nfk nfn nfo nfr nfs nka nkc nkf nkk nkn nko nkr nks nna nnc nnf nnk nnn nno nns no- noa noc nof nok non noo nor nos nra nrc nrf nrk nrn nro nrr nrs nsa nsc nsf nsk nsn nso nsr nss oaa oac oaf oak oan oao oar oas oc- oca occ ocf ock ocn oco ocr ocs of- ofa ofc off ofn ofo ofr ofs oka okc okk oko okr oks on- ona onc onf onk onn ono onr ons oo- ooa ooc oof ook oon ooo oor oos or- ora orc orf ork orn oro orr ors os- osa osc osf osk osn oso osr oss ra- raa rac raf rak ran rao rar ras rca rcc rcf rcn rco rcr rcs rfa rfc rff rfk rfn rfo rfr rfs rkc rkf rkk rko rks rna rnc rnn rno rnr rns roa roc rof rok ron roo ror ros rra rrc rrf rrk rrn rrr rrs rsa rsc rsf rsk rsn rso rsr rss saa sac saf sak san sao sar sas sca scc scf sck scn sco scr scs sfa sfc sff sfk sfn sfo sfr sfs sk- ska skc skf skk sko skr sks sna snc snf snk snn sno snr sns soa soc sof sok son soo sor sos sr- sra src srf srk srn sro srr srs ss- ssa ssc ssf ssk ssn sso ssr sss

-ana a-ak a-ok aaaa aaac aaaf aaan aaar aaas aaca aacc aacf aack aacn aaco aacr aacs aafa aafc aaff aaka aana aaon aaoo aara aarc aaro aars aasa aasc aasf aass acaa acac acan acar acas acca accc accf acco accs acfc acfs acks acoa acon acor acos acr- acra acrc acro acrr acrs acsa acsc acss afaa afak afan afao afar afca afcc afcs affa affc affo affs afka afkr afoa afoo afor afr- afra afrc afro afrs afsa afsc akaa akan akao akar akas akca akka akko akna akok akon akos akr- akra aksa ana- anaa anac anak anan anao anar anas anca ancc anco anfa anfo ank- anka anko anna anno anns ano- anoa anon anor anos anrc ansa ansf anso aoca aocs aoks aono aora aorn aors aoss arac araf arak aran arar aras arc- arca arco arcs arfa arfc arff arfs arka arko arks arna arnk arno arns aroa aron aroo aror aros arr- arra arrc arrk arro arrr arrs ars- arsa arsc arsk arso asaa asac asaf asak asan asao asar asas asc- asca ascc asco ascr asfa aska asko askr asks asnc asno asoc asof asok ason asor asos asra asrc asro asrs assa assc assk assn asso assr asss caaa caac caaf caan caas cac- caca cacc cack caco cacr cafa cafc caff cafs caka cana canc cank cann cano cans caor caos cara carc carf cark carn caro carr cars casa casc cask caso casr cass ccaa ccac ccaf ccar ccas ccca cccc cccf cccs ccfa ccfc ccff ccna ccnc ccnf ccnr ccns ccoc ccra ccrc ccrf ccrs ccsa ccsf ccsn ccss cfaa cfac cfao cfar cfca cfcf cfcn cfco cfcs cffr cfnr cfns cfoa cfor cfos cfra cfrn cfsa ckac ckan ckck ckco ckcs ckfr cknc ckns ckoa ckoc ckoo ckor ckos ckrc cksa ckso cnaa cnac cnas cnco cnfa cnna cnrc cnrr cnsa cnss coak coan coas coca cock coco cofc coff cofs cok- coka coko con- cona conc conf conk conn cono cons coof cook coon coos cor- cora corc corf cork corn coro corr cors cosa cosc coso coss crac craf cran crar cras crca crcc crcr crfc crfs crkc crna crns croc crok cron croo cror crsa crss csaa csac csak csao csar csas cscc cscf csco cscr cscs csfc csfr cska csks csor csos csra csrc csrs cssa cssr f--k faaa faac faan faas faca facc fack facs fafa fafc faff fafo fako fana fanc fank fano fans faon fara farc fark faro farr fars fasa fasc fasn faso fass fcar fcas fcca fccf fcra fcsc ffar ffcc ffff ffrr ffsa ffss fnac fnar fnrs foaf foak foan foar foca fock foco focs fofo fono fons foof fook foon foos for- fora fork forn foro forr fors fosa foso foss frac frak fran fras frcc frcn frfc frns fron fros frsc frso fsas fscc fsck fsfo fsra fssa fssc fssf k-os kaaa kaaf kaak kaan kaar kaas kacc kaco kacs kafa