-er a-a a-c aaa aac aad aae aak aam aao aap aar ac- aca acc acd ace ack acm aco acp acr ad- ada adc add ade adk adm ado adp adr aea aec aed aee aek aem aeo aep aer aka akc akd ake akk akm ako akp akr ama amc amd ame amk amm amo amp amr aoa aoc aod aoe aok aom aoo aop aor ap- apa apc apd ape apk apm apo app apr ar- ara arc ard are ark arm aro arp arr c-- caa cac cad cae cak cam cao cap car cca ccc ccd cce cck ccm cco ccp ccr cda cdc cdd cde cdk cdm cdo cdp cdr ce- cea cec ced cee cek cem ceo cep cer cka ckc ckd ckm cko cma cmc cmd cme cmk cmm cmo cmp cmr co- coa coc cod coe cok com coo cop cor cpa cpc cpd cpe cpk cpm cpo cpp cpr cra crc crd cre crk crm cro crp crr daa dac dad dae dak dam dao dap dar dca dcc dcd dce dck dcm dco dcp dcr dda ddc ddd dde ddk ddm ddo ddp ddr de- dea dec ded dee dek dem deo dep der dka dkc dke dkk dkm dko dkp dkr dma dmc dmd dme dmk dmm dmo dmp dmr doa doc dod doe dok dom doo dop dor dpa dpc dpd dpe dpk dpm dpo dpp dpr dra drc drd dre drk drm dro drp drr eaa eac ead eae eak eam eao eap ear ec- eca ecc ecd ece eck ecm eco ecr ed- eda edc edd ede edk edm edo edp edr eea eec eed eee eek eem eeo eep eer eka ekc ekd eke eko ekp ekr em- ema emc emd eme emk emm emo emp emr eo- eoa eoc eod eoe eok eom eoo eop eor ep- epa epc epd epe epm epo epp epr era erc erd ere erk erm ero erp err ka- kaa kac kad kae kak kam kao kap kar kca kcc kcd kce kck kcm kcp kcr kda kdc kde kdk kdm kdo kdp kdr ke- kea kec ked kee kek kem keo kep ker kkc kke kkk kkm kkp kkr kma kmc kmd kme kmk kmm kmo kmp koa koc kod koe kok kom koo kop kor kpa kpc kpd kpe kpk kpm kpo kpp kpr kra krc krd krk kro krp krr m-o m-r maa mac mad mae mak mam mao map mar mc- mca mcc mcd mce mck mcm mco mcp mcr mda mdc mdd mde mdk mdm mdo mdp mdr mea mec med mee mek mem meo mep mer mka mkc mkd mke mkk mkm mko mkp mkr mma mmc mmd mme mmk mmm mmo mmp mmr moa moc mod moe mok mom moo mop mor mpa mpc mpd mpe mpk mpm mpo mpp mpr mra mrc mrd mre mrk mrm mro mrp mrr oaa oac oad oae oak oam oao oap oar oc- oca occ ocd ock ocm oco ocp ocr oda odc odd ode odm odo odp odr oea oec oed oee oem oeo oep oer oka okc okd oke okk oko okp okr om- oma omc omd ome omm omo omp omr oo- ooa ooc ood ook oom ooo oop oor op- opa opc opd ope opk opm opo opp opr or- ora orc ord ore ork orm oro orp orr p-p paa pac pad pae pak pam pao pap par pca pcc pcd pce pck pcm pco pcp pcr pda pdc pdd pde pdk pdm pdo pdp pdr pea pec ped pee pek pem peo pep per pka pkc pkd pke pkm pko pkp pkr pma pmc pmd pme pmk pmm pmo pmp pmr poa poc pod poe pok pom poo pop por ppa ppc ppd ppe ppk ppm ppo ppp ppr pra prc prd pre prk prm pro prp prr ra- raa rac rad rae rak ram rao rap rar rca rcc rcd rce rcm rco rcp rcr rda rdc rdd rde rdm rdo rdp rdr re- rea rec red ree rek rem reo rep rer rkc rke rkk rkm rko rkp rma rmc rmd rme rmm rmo rmp rmr roa roc rod roe rok rom roo rop ror rpa rpc rpd rpe rpk rpm rpo rpp rpr rra rrc rrd rrk rrm rrp rrr