-er a-a aaa aad aae aak aao aar aas aau ad- ada add ade adk ado adr ads adu aea aed aee aek aeo aer aes aeu aka akd ake akk ako akr aks aku aoa aod aoe aok aoo aor aos aou ar- ara ard are ark aro arr ars aru as- asa asd ase ask aso asr ass asu au- aua aud aue auk auo aur aus daa dad dae dak dao dar das dau dda ddd dde ddk ddo ddr dds ddu de- dea ded dee dek deo der des deu dka dke dkk dko dkr dks dku doa dod doe dok doo dor dos dou dra drd dre drk dro drr drs dru dsa dsd dse dsk dso dsr dss dsu dua dud due duk duo dur dus eaa ead eae eak eao ear eas eau ed- eda edd ede edk edo edr eds edu eea eed eee eek eeo eer ees eka ekd eke eko ekr eks eku eo- eoa eod eoe eok eoo eor eos eou era erd ere erk ero err ers eru es- esa esd ese esk eso esr ess esu eu- eua eud eue eur eus ka- kaa kad kae kak kao kar kas kau kda kde kdk kdo kdr kds kdu ke- kea ked kee kek keo ker kes kke kkk kkr kks kku koa kod koe kok koo kor kos kou kra krd krk kro krr krs kru ksa ksd kse ksk kso ksr kss ksu kud kue kuk kur kus kuu oaa oad oae oak oao oar oas oau oda odd ode odo odr ods odu oea oed oee oeo oer oes oka okd oke okk oko okr oks oku oo- ooa ood ook ooo oor oos or- ora ord ore ork oro orr ors oru os- osa osd ose osk oso osr oss osu ou- oua oud oue ouk ouo our ous ra- raa rad rae rak rao rar ras rau rda rdd rde rdo rdr rds rdu re- rea red ree rek reo rer res reu rke rkk rko rks rku roa rod roe rok roo ror ros rou rra rrd rrk rrr rrs rru rsa rsd rse rsk rso rsr rss rsu rua rud rue ruk ruo rur rus ruu saa sad sae sak sao sar sas sau sda sdd sde sdk sdo sdr sds sdu se- sea sed see sek seo ser ses seu sk- ska skd ske skk sko skr sks sku soa sod soe sok soo sor sos sou sr- sra srd sre srk sro srr srs ss- ssa ssd sse ssk sso ssr sss ssu sua sud sue suk suo sur sus suu ua- uaa uad uae uak uao uar uas uau uda udd ude udk udo udr uds udu uea ued uee uer ues uka uke ukk ukr uku uoa uod uoe uok uoo uor uos ur- ura urd ure urk uro urr urs uru usa usd use usk uso usr uss usu uua uue uur uus uuu