-er a-a aaa aad aae aaf aao aar aau ad- ada add ade adf ado adr adu aea aed aee aef aeo aer aeu af- afa afd afe aff afo afr afu aoa aod aoe aof aoo aor aou ar- ara ard are arf aro arr aru au- aua aud aue auf auo aur daa dad dae daf dao dar dau dda ddd dde ddf ddo ddr ddu de- dea ded dee def deo der deu dfa dfd dfe dff dfo dfr dfu doa dod doe dof doo dor dou dra drd dre dro drr dru dua dud due duf duo dur eaa ead eae eaf eao ear eau ed- eda edd ede edf edo edr edu eea eed eee eef eeo eer ef- efa efd efe eff efo efr eo- eoa eod eoe eof eoo eor eou era erd ere erf ero err eru eu- eua eud eue euf eur faa fad fae faf fao far fau fda fdd fde fdf fdo fdr fdu fea fed fee fef feo fer feu ffa ffd ffe fff ffo ffr ffu foa foe fof foo for fou fra frd fre frf fro frr fru fua fud fue fuf fuo fur fuu oaa oad oae oaf oao oar oau oda odd ode odf odo odr odu oea oed oee oef oeo oer of- ofa ofd ofe off ofo ofr ofu oo- ooa ood oof ooo oor or- ora ord ore orf oro orr oru ou- oua oud oue ouf ouo our ra- raa rad rae raf rao rar rau rda rdd rde rdf rdo rdr rdu re- rea red ree ref reo rer reu rfa rfd rfe rff rfo rfr rfu roa rod roe rof roo ror rou rra rrd rrf rrr rru rua rud rue ruf ruo rur ruu ua- uaa uad uae uaf uao uar uau uda udd ude udf udo udr udu uea ued uee uef uer ufa ufd ufe uff ufo ufr ufu uoa uod uoe uoo uor ur- ura urd ure urf uro urr uru uua uue uur uuu