-er a-a a-i aaa aad aae aai aak aao aap aar aas ad- ada add ade adi adk ado adp adr ads aea aed aee aei aek aeo aep aer aes ai- aia aid aie aii aik aio aip air ais aka akd ake aki akk ako akp akr aks aoa aod aoe aoi aok aoo aop aor aos ap- apa apd ape api apk apo app apr aps ar- ara ard are ari ark aro arp arr ars as- asa asd ase asi ask aso asp asr ass daa dad dae dai dak dao dap dar das dda ddd dde ddi ddk ddo ddp ddr dds de- dea ded dee dei dek deo dep der des di- dia did die dii dik dio dip dir dis dka dke dki dkk dko dkp dkr dks doa dod doe doi dok doo dop dor dos dpa dpd dpe dpi dpk dpo dpp dpr dps dra drd dre dri drk dro drp drr drs dsa dsd dse dsi dsk dso dsp dsr dss eaa ead eae eai eak eao eap ear eas ed- eda edd ede edi edk edo edp edr eds eea eed eee eek eeo eep eer ees eia eid eie eii eik eio eip eir eis eka ekd eke eki eko ekp ekr eks eo- eoa eod eoe eoi eok eoo eop eor eos ep- epa epd epe epi epo epp epr eps era erd ere eri erk ero erp err ers es- esa esd ese esi esk eso esp esr ess i-d ia- iaa iad iae iai iao iap iar ias ida idd ide idi idk ido idp idr ids ie- iea ied iee iei iek iep ier ies iia iid iie iii iio iip iir iis ika ike iki ikk iko ikr iks io- ioa iod ioe ioi ioo iop ior ios ipa ipd ipe ipi ipo ipp ipr ips ir- ira ird ire iri irk iro irp irr irs is- isa isd ise isi isk iso isp isr iss ka- kaa kad kae kai kak kao kap kar kas kda kde kdk kdo kdp kdr kds ke- kea ked kee kei kek keo kep ker kes kia kid kie kii kik kio kip kir kis kke kki kkk kkp kkr kks koa kod koe koi kok koo kop kor kos kpa kpd kpe kpi kpk kpo kpp kpr kps kra krd kri krk kro krp krr krs ksa ksd kse ksi ksk kso ksp ksr kss o-i oaa oad oae oai oak oao oap oar oas oda odd ode odi odo odp odr ods oea oed oee oei oeo oep oer oes oia oid oie oii oik oio oip oir ois oka okd oke oki okk oko okp okr oks oo- ooa ood ooi ook ooo oop oor oos op- opa opd ope opi opk opo opp opr ops or- ora ord ore ori ork oro orp orr ors os- osa osd ose osi osk oso osp osr oss p-p paa pad pae pai pak pao pap par pas pda pdd pde pdi pdk pdo pdp pdr pds pea ped pee pei pek peo pep per pes pia pid pie pii pik pio pip pir pis pka pkd pke pki pko pkp pkr pks poa pod poe poi pok poo pop por pos ppa ppd ppe ppi ppk ppo ppp ppr pps pra prd pre pri prk pro prp prr prs ps- psa psd pse psi psk pso psp psr pss ra- raa rad rae rai rak rao rap rar ras rda rdd rde rdi rdo rdp rdr rds re- rea red ree rei rek reo rep rer res ria rid rie rii rik rio rip rir ris rke rkk rko rkp rks roa rod roe roi rok roo rop ror ros rpa rpd rpe rpi rpk rpo rpp rpr rps rra rrd rri rrk rrp rrr rrs rsa rsd rse rsi rsk rso rsp rsr rss saa sad sae sai sak sao sap sar sas sda sdd sde sdi sdk sdo sdp sdr sds se- sea sed see sei sek seo sep ser ses sia sid sie sii sik sio sip sir sis sk- ska skd ske ski skk sko skp skr sks soa sod soe soi sok soo sop sor sos spa spd spe spi spk spo spp spr sps sr- sra srd sre sri srk sro srp srr srs ss- ssa ssd sse ssi ssk sso ssp ssr sss