-er a-a aaa aad aae aag aak aan aao aar ad- ada add ade adg adk adn ado adr aea aed aee aeg aek aen aeo aer ag- aga agd age agg agk agn ago agr aka akd ake akg akk akn ako akr an- ana and ane ang ank ann ano anr aoa aod aoe aog aok aon aoo aor ar- ara ard are arg ark arn aro arr daa dad dae dag dak dan dao dar dda ddd dde ddg ddk ddn ddo ddr de- dea ded dee deg dek den deo der dga dgd dge dgg dgk dgn dgr dka dke dkg dkk dko dkr dna dnd dne dng dnk dnn dno dnr doa dod doe dog dok don doo dor dra drd dre drg drk drn dro drr eaa ead eae eag eak ean eao ear ed- eda edd ede edg edk edn edo edr eea eed eee eeg eek een eeo eer ega egd ege egg egn ego egr eka ekd eke ekg eko ekr en- ena end ene eng enk enn eno enr eo- eoa eod eoe eog eok eon eoo eor era erd ere erg erk ern ero err g-d gaa gad gae gag gak gan gao gar gda gdd gde gdk gdn gdo gdr ge- gea ged gee geg gek gen geo ger gga ggd ggg ggn ggo ggr gka gkd gkn gko gna gnd gne gnn gno gnr goa god goe gog gok gon goo gor gra grd gre grg grk grn gro grr ka- kaa kad kae kag kak kan kao kar kda kde kdg kdk kdo kdr ke- kea ked kee keg kek ken keo ker kga kgd kgo kke kkk kkn kkr kn- kna knd kne kng knk knn kno knr koa kod koe kog kok kon koo kor kra krd krg krk krn kro krr naa nad nae nag nak nan nao nar nda ndd nde ndg ndk ndn ndo ndr ne- nea ned nee neg nek nen neo ner nga ngd nge ngg ngk ngn ngo nka nke nkk nkn nko nkr nna nne nng nnk nnn nno no- noa nod noe nog nok non noo nor nra nrd nre nrg nrk nrn nro nrr oaa oad oae oag oak oan oao oar oda odd ode odg odn odo odr oea oed oee oeg oen oeo oer oga ogd oge ogg ogn ogo oka okd oke okg okk oko okr on- ona ond one ong onk onn ono onr oo- ooa ood oog ook oon ooo oor or- ora ord ore org ork orn oro orr ra- raa rad rae rag rak ran rao rar rda rdd rde rdg rdn rdo rdr re- rea red ree reg rek ren reo rer rga rgd rge rgg rgk rgn rgo rgr rke rkg rkk rko rna rnd rng rnn rno rnr roa rod roe rog rok ron roo ror rra rrd rrg rrk rrn rrr