-er a-a aaa aad aae aak aam aao aap aar ad- ada add ade adk adm ado adp adr aea aed aee aek aem aeo aep aer aka akd ake akk akm ako akp akr ama amd ame amk amm amo amp amr aoa aod aoe aok aom aoo aop aor ap- apa apd ape apk apm apo app apr ar- ara ard are ark arm aro arp arr daa dad dae dak dam dao dap dar dda ddd dde ddk ddm ddo ddp ddr de- dea ded dee dek dem deo dep der dka dke dkk dkm dko dkp dkr dma dmd dme dmk dmm dmo dmp dmr doa dod doe dok dom doo dop dor dpa dpd dpe dpk dpm dpo dpp dpr dra drd dre drk drm dro drp drr eaa ead eae eak eam eao eap ear ed- eda edd ede edk edm edo edp edr eea eed eee eek eem eeo eep eer eka ekd eke eko ekp ekr em- ema emd eme emk emm emo emp emr eo- eoa eod eoe eok eom eoo eop eor ep- epa epd epe epm epo epp epr era erd ere erk erm ero erp err ka- kaa kad kae kak kam kao kap kar kda kde kdk kdm kdo kdp kdr ke- kea ked kee kek kem keo kep ker kke kkk kkm kkp kkr kma kmd kme kmk kmm kmo kmp koa kod koe kok kom koo kop kor kpa kpd kpe kpk kpm kpo kpp kpr kra krd krk kro krp krr m-o m-r maa mad mae mak mam mao map mar mda mdd mde mdk mdm mdo mdp mdr mea med mee mek mem meo mep mer mka mkd mke mkk mkm mko mkp mkr mma mmd mme mmk mmm mmo mmp mmr moa mod moe mok mom moo mop mor mpa mpd mpe mpk mpm mpo mpp mpr mra mrd mre mrk mrm mro mrp mrr oaa oad oae oak oam oao oap oar oda odd ode odm odo odp odr oea oed oee oem oeo oep oer oka okd oke okk oko okp okr om- oma omd ome omm omo omp omr oo- ooa ood ook oom ooo oop oor op- opa opd ope opk opm opo opp opr or- ora ord ore ork orm oro orp orr p-p paa pad pae pak pam pao pap par pda pdd pde pdk pdm pdo pdp pdr pea ped pee pek pem peo pep per pka pkd pke pkm pko pkp pkr pma pmd pme pmk pmm pmo pmp pmr poa pod poe pok pom poo pop por ppa ppd ppe ppk ppm ppo ppp ppr pra prd pre prk prm pro prp prr ra- raa rad rae rak ram rao rap rar rda rdd rde rdm rdo rdp rdr re- rea red ree rek rem reo rep rer rke rkk rkm rko rkp rma rmd rme rmm rmo rmp rmr roa rod roe rok rom roo rop ror rpa rpd rpe rpk rpm rpo rpp rpr rra rrd rrk rrm rrp rrr