a-a a-c aaa aac aad aak aao aap aar aas ac- aca acc acd ack aco acp acr acs ad- ada adc add adk ado adp adr ads aka akc akd akk ako akp akr aks aoa aoc aod aok aoo aop aor aos ap- apa apc apd apk apo app apr aps ar- ara arc ard ark aro arp arr ars as- asa asc asd ask aso asp asr ass c-- caa cac cad cak cao cap car cas cca ccc ccd cck cco ccp ccr ccs cda cdc cdd cdk cdo cdp cdr cds cka ckc ckd cko cks co- coa coc cod cok coo cop cor cos cpa cpc cpd cpk cpo cpp cpr cps cra crc crd crk cro crp crr crs csa csc csd csk cso csp csr css daa dac dad dak dao dap dar das dca dcc dcd dck dco dcp dcr dcs dda ddc ddd ddk ddo ddp ddr dds dka dkc dkk dko dkp dkr dks doa doc dod dok doo dop dor dos dpa dpc dpd dpk dpo dpp dpr dps dra drc drd drk dro drp drr drs dsa dsc dsd dsk dso dsp dsr dss ka- kaa kac kad kak kao kap kar kas kca kcc kcd kck kcp kcr kcs kda kdc kdk kdo kdp kdr kds kkc kkk kkp kkr kks koa koc kod kok koo kop kor kos kpa kpc kpd kpk kpo kpp kpr kps kra krc krd krk kro krp krr krs ksa ksc ksd ksk kso ksp ksr kss oaa oac oad oak oao oap oar oas oc- oca occ ocd ock oco ocp ocr ocs oda odc odd odo odp odr ods oka okc okd okk oko okp okr oks oo- ooa ooc ood ook ooo oop oor oos op- opa opc opd opk opo opp opr ops or- ora orc ord ork oro orp orr ors os- osa osc osd osk oso osp osr oss p-p paa pac pad pak pao pap par pas pca pcc pcd pck pco pcp pcr pcs pda pdc pdd pdk pdo pdp pdr pds pka pkc pkd pko pkp pkr pks poa poc pod pok poo pop por pos ppa ppc ppd ppk ppo ppp ppr pps pra prc prd prk pro prp prr prs ps- psa psc psd psk pso psp psr pss ra- raa rac rad rak rao rap rar ras rca rcc rcd rco rcp rcr rcs rda rdc rdd rdo rdp rdr rds rkc rkk rko rkp rks roa roc rod rok roo rop ror ros rpa rpc rpd rpk rpo rpp rpr rps rra rrc rrd rrk rrp rrr rrs rsa rsc rsd rsk rso rsp rsr rss saa sac sad sak sao sap sar sas sca scc scd sck sco scp scr scs sda sdc sdd sdk sdo sdp sdr sds sk- ska skc skd skk sko skp skr sks soa soc sod sok soo sop sor sos spa spc spd spk spo spp spr sps sr- sra src srd srk sro srp srr srs ss- ssa ssc ssd ssk sso ssp ssr sss

a-ak a-do a-ok aaaa aaac aaad aaap aaar aaas aaca aacc aacd aack aaco aacp aacr aacs aada aadc aads aaka aaoo aapa aapc aapo aaps aara aarc aard aaro aarp aars aasa aasc aasd aass acaa acac acad acap acar acas acca accc accd acco accp accs acda acdc acdp acds ackd acks acoa acod acop acor acos acpa acpd acpr acps acr- acra acrc acro acrr acrs acsa acsc acsd acss adaa adac adad adak adao adap adar adas adcc adcs adda addc addd addo addr adds adoc adod adok adoo ador ados adp- adps adra adro adrs adsa adso adsr adss akaa akao akap akar akas akca akka akko akok akos akpo akr- akra aksa aoca aocs aokp aoks aopo aora aors aosd aosp aoss apac apak apao apap apar apas apca apcc apcd apco apcr apcs apda apdd apds apo- apoc apod apoo apop apor apos appa appc appd appr apps apra aprc apro aprs apsa apso apss arac arad arak arap arar aras arc- arca arco arcs arda ardc ardo ards arka arko arks aroa arod aroo aror aros arpa arps arr- arra arrc arrk arro arrr arrs ars- arsa arsc arsd arsk arso asaa asac asad asak asao asap asar asas asc- asca ascc asco ascp ascr asda asdo asds aska asko askr asks asoc asod asok asop asor asos aspa aspc aspd aspo aspr asps asra asrc asro asrs assa assc assd assk asso assp assr asss c-cd caaa caac caap caas cac- caca cacc cack caco cacr cada cadc cadd cado cadr cads caka caod caor caos capa capc capd capo capp caps cara carc card cark caro carp carr cars casa casc casd cask caso casp casr cass ccaa ccac ccad ccap ccar ccas ccca cccc cccp cccs ccdc ccdp ccdr ccds ccoc ccod ccpa ccpp ccpr ccps ccra ccrc ccrp ccrs ccsa ccsd ccsp ccss cd-r cdaa cdac cdad cdcs cdda cddr cdos cdps cdrs cdss ckac ckck ckco ckcs ckdo ckoa ckoc ckoo ckor ckos ckpc ckpr ckrc ckrd cksa ckso coad coak coas coca cock coco cocp coda codd cods cok- coka coko cood cook coop coos copa copd copo copp copr cops cor- cora corc cord cork coro corp corr cors cosa cosc coso cosp coss cpaa cpac cpad cpap cpas cpca cpcs cpos cppa cppd cpps cprs cpsa cpsc cpsk cpso cpsr crac crap crar cras crca crcc crcr crda crdc crkc crkp croc crod crok croo crop cror crpc crps crsa crsp crss csaa csac csak csao csar csas cscc cscd csco cscr cscs csda csdp csdr cska csks csor csos cspa cspc cspd csps csra csrc csrd csrs cssa cssd cssr daad daap daar daas daca dacs dada dado dads daka dako daks daos dapa dapp daps dara darc dard dark daro darp darr dars dasa dasc dasd dask dass dcas dcca dccc dccp dccs dcds dcop dcos