a-a a-c aaa aac aad aae aak aao aap aas ac- aca acc acd ace ack aco acp acs ad- ada adc add ade adk ado adp ads aea aec aed aee aek aeo aep aes aka akc akd ake akk ako akp aks aoa aoc aod aoe aok aoo aop aos ap- apa apc apd ape apk apo app aps as- asa asc asd ase ask aso asp ass c-- caa cac cad cae cak cao cap cas cca ccc ccd cce cck cco ccp ccs cda cdc cdd cde cdk cdo cdp cds ce- cea cec ced cee cek ceo cep ces cka ckc ckd cko cks co- coa coc cod coe cok coo cop cos cpa cpc cpd cpe cpk cpo cpp cps csa csc csd cse csk cso csp css daa dac dad dae dak dao dap das dca dcc dcd dce dck dco dcp dcs dda ddc ddd dde ddk ddo ddp dds de- dea dec ded dee dek deo dep des dka dkc dke dkk dko dkp dks doa doc dod doe dok doo dop dos dpa dpc dpd dpe dpk dpo dpp dps dsa dsc dsd dse dsk dso dsp dss eaa eac ead eae eak eao eap eas ec- eca ecc ecd ece eck eco ecs ed- eda edc edd ede edk edo edp eds eea eec eed eee eek eeo eep ees eka ekc ekd eke eko ekp eks eo- eoa eoc eod eoe eok eoo eop eos ep- epa epc epd epe epo epp eps es- esa esc esd ese esk eso esp ess ka- kaa kac kad kae kak kao kap kas kca kcc kcd kce kck kcp kcs kda kdc kde kdk kdo kdp kds ke- kea kec ked kee kek keo kep kes kkc kke kkk kkp kks koa koc kod koe kok koo kop kos kpa kpc kpd kpe kpk kpo kpp kps ksa ksc ksd kse ksk kso ksp kss oaa oac oad oae oak oao oap oas oc- oca occ ocd ock oco ocp ocs oda odc odd ode odo odp ods oea oec oed oee oeo oep oes oka okc okd oke okk oko okp oks oo- ooa ooc ood ook ooo oop oos op- opa opc opd ope opk opo opp ops os- osa osc osd ose osk oso osp oss p-p paa pac pad pae pak pao pap pas pca pcc pcd pce pck pco pcp pcs pda pdc pdd pde pdk pdo pdp pds pea pec ped pee pek peo pep pes pka pkc pkd pke pko pkp pks poa poc pod poe pok poo pop pos ppa ppc ppd ppe ppk ppo ppp pps ps- psa psc psd pse psk pso psp pss saa sac sad sae sak sao sap sas sca scc scd sce sck sco scp scs sda sdc sdd sde sdk sdo sdp sds se- sea sec sed see sek seo sep ses sk- ska skc skd ske skk sko skp sks soa soc sod soe sok soo sop sos spa spc spd spe spk spo spp sps ss- ssa ssc ssd sse ssk sso ssp sss