-er a-a aaa aad aae aaf aag aan aao aar ad- ada add ade adf adg adn ado adr aea aed aee aef aeg aen aeo aer af- afa afd afe aff afg afn afo afr ag- aga agd age agf agg agn ago agr an- ana and ane anf ang ann ano anr aoa aod aoe aof aog aon aoo aor ar- ara ard are arf arg arn aro arr daa dad dae daf dag dan dao dar dda ddd dde ddf ddg ddn ddo ddr de- dea ded dee def deg den deo der dfa dfd dfe dff dfg dfn dfo dfr dga dgd dge dgf dgg dgn dgr dna dnd dne dnf dng dnn dno dnr doa dod doe dof dog don doo dor dra drd dre drg drn dro drr eaa ead eae eaf eag ean eao ear ed- eda edd ede edf edg edn edo edr eea eed eee eef eeg een eeo eer ef- efa efd efe eff efg efo efr ega egd ege egf egg egn ego egr en- ena end ene enf eng enn eno enr eo- eoa eod eoe eof eog eon eoo eor era erd ere erf erg ern ero err faa fad fae faf fag fan fao far fda fdd fde fdf fdg fdn fdo fdr fea fed fee fef feg fen feo fer ffa ffd ffe fff ffg ffn ffo ffr fga fgd fge fgf fgg fgn fgr fna fnd fne fnf fng fnn fnr foa foe fof fog fon foo for fra frd fre frf frg frn fro frr g-d gaa gad gae gaf gag gan gao gar gda gdd gde gdf gdn gdo gdr ge- gea ged gee gef geg gen geo ger gfa gfd gfe gff gfo gfr gga ggd ggg ggn ggo ggr gna gnd gne gnf gnn gno gnr goa god goe gof gog gon goo gor gra grd gre grf grg grn gro grr naa nad nae naf nag nan nao nar nda ndd nde ndf ndg ndn ndo ndr ne- nea ned nee nef neg nen neo ner nfa nfd nfe nff nfn nfo nfr nga ngd nge ngf ngg ngn ngo nna nne nnf nng nnn nno no- noa nod noe nof nog non noo nor nra nrd nre nrf nrg nrn nro nrr oaa oad oae oaf oag oan oao oar oda odd ode odf odg odn odo odr oea oed oee oef oeg oen oeo oer of- ofa ofd ofe off ofg ofn ofo ofr oga ogd oge ogf ogg ogn ogo on- ona ond one onf ong onn ono onr oo- ooa ood oof oog oon ooo oor or- ora ord ore orf org orn oro orr ra- raa rad rae raf rag ran rao rar rda rdd rde rdf rdg rdn rdo rdr re- rea red ree ref reg ren reo rer rfa rfd rfe rff rfg rfn rfo rfr rga rgd rge rgf rgg rgn rgo rgr rna rnd rng rnn rno rnr roa rod roe rof rog ron roo ror rra rrd rrf rrg rrn rrr