-er a-a aaa aad aae aak aao aar aau ad- ada add ade adk ado adr adu aea aed aee aek aeo aer aeu aka akd ake akk ako akr aku aoa aod aoe aok aoo aor aou ar- ara ard are ark aro arr aru au- aua aud aue auk auo aur daa dad dae dak dao dar dau dda ddd dde ddk ddo ddr ddu de- dea ded dee dek deo der deu dka dke dkk dko dkr dku doa dod doe dok doo dor dou dra drd dre drk dro drr dru dua dud due duk duo dur eaa ead eae eak eao ear eau ed- eda edd ede edk edo edr edu eea eed eee eek eeo eer eka ekd eke eko ekr eku eo- eoa eod eoe eok eoo eor eou era erd ere erk ero err eru eu- eua eud eue eur ka- kaa kad kae kak kao kar kau kda kde kdk kdo kdr kdu ke- kea ked kee kek keo ker kke kkk kkr kku koa kod koe kok koo kor kou kra krd krk kro krr kru kud kue kuk kur kuu oaa oad oae oak oao oar oau oda odd ode odo odr odu oea oed oee oeo oer oka okd oke okk oko okr oku oo- ooa ood ook ooo oor or- ora ord ore ork oro orr oru ou- oua oud oue ouk ouo our ra- raa rad rae rak rao rar rau rda rdd rde rdo rdr rdu re- rea red ree rek reo rer reu rke rkk rko rku roa rod roe rok roo ror rou rra rrd rrk rrr rru rua rud rue ruk ruo rur ruu ua- uaa uad uae uak uao uar uau uda udd ude udk udo udr udu uea ued uee uer uka uke ukk ukr uku uoa uod uoe uok uoo uor ur- ura urd ure urk uro urr uru uua uue uur uuu