-er a-a a-c aaa aac aae aaf aag aah aan aao aar ac- aca acc ace acf acg ach acn aco acr aea aec aee aef aeg aeh aen aeo aer af- afa afc afe aff afg afh afn afo afr ag- aga agc age agf agg agh agn ago agr aha ahc ahe ahf ahg ahh ahn aho ahr an- ana anc ane anf ang anh ann ano anr aoa aoc aoe aof aog aoh aon aoo aor ar- ara arc are arf arg arh arn aro arr c-- caa cac cae caf cag cah can cao car cca ccc cce ccf ccg cch ccn cco ccr ce- cea cec cee cef ceg ceh cen ceo cer cfa cfc cfe cff cfg cfh cfn cfo cfr cga cgc cge cgg cgh cgn cgo cgr ch- cha chc che chf chg chh chn cho chr cn- cna cnc cne cnf cng cnh cnn cno cnr co- coa coc coe cof cog coh con coo cor cra crc cre crf crg crh crn cro crr eaa eac eae eaf eag eah ean eao ear ec- eca ecc ece ecf ecg ech ecn eco ecr eea eec eee eef eeg een eeo eer ef- efa efc efe eff efg efh efo efr ega egc ege egf egg egh egn ego egr eha ehc ehe ehf ehg ehh ehn eho ehr en- ena enc ene enf eng enh enn eno enr eo- eoa eoc eoe eof eog eoh eon eoo eor era erc ere erf erg erh ern ero err faa fac fae faf fag fah fan fao far fca fcc fce fcf fcg fcn fco fcr fea fec fee fef feg feh fen feo fer ffa ffc ffe fff ffg ffh ffn ffo ffr fga fgc fge fgf fgg fgh fgn fgr fha fhc fhe fhf fhg fhh fhn fho fhr fna fnc fne fnf fng fnh fnn fnr foa foc foe fof fog foh fon foo for fra frc fre frf frg frh frn fro frr gaa gac gae gaf gag gah gan gao gar gca gcc gce gcf gcg gch gcn gco gcr ge- gea gec gee gef geg geh gen geo ger gfa gfc gfe gff gfh gfo gfr gga ggc ggg ggh ggn ggo ggr gha ghc ghe ghg ghh ghn gho ghr gna gnc gne gnf gnn gno gnr goa goc goe gof gog goh gon goo gor gra grc gre grf grg grh grn gro grr haa hac hae haf hag hah han hao har hca hcc hce hcf hcg hch hcn hco hcr he- hea hec hee hef heg heh hen heo her hfa hfc hfe hff hfg hfh hfn hfo hfr hga hgc hge hgf hgg hgh hgn hgo hgr hha hhc hhe hhf hhg hhh hhn hho hhr hna hnc hne hnf hng hnh hnn hno hoa hoc hoe hof hog hoh hon hoo hor hr- hra hrc hre hrf hrg hrh hrn hro hrr naa nac nae naf nag nah nan nao nar nca ncc nce ncf ncg nch ncn nco ncr ne- nea nec nee nef neg neh nen neo ner nfa nfc nfe nff nfn nfo nfr nga ngc nge ngf ngg ngh ngn ngo nha nhc nhe nhf nhg nhh nhn nhr nna nnc nne nnf nng nnh nnn nno no- noa noc noe nof nog noh non noo nor nra nrc nre nrf nrg nrn nro nrr oaa oac oae oaf oag oah oan oao oar oc- oca occ ocf ocg och ocn oco ocr oea oec oee oef oeg oeh oen oeo oer of- ofa ofc ofe off ofg ofn ofo ofr oga ogc oge ogf ogg ogh ogn ogo oha ohc ohe ohf ohg ohh ohn oho ohr on- ona onc one onf ong onh onn ono onr oo- ooa ooc oof oog ooh oon ooo oor or- ora orc ore orf org orh orn oro orr ra- raa rac rae raf rag rah ran rao rar rca rcc rce rcf rcg rch rcn rco rcr re- rea rec ree ref reg reh ren reo rer rfa rfc rfe rff rfg rfh rfn rfo rfr rga rgc rge rgf rgg rgh rgn rgo rgr rh- rha rhc rhe rhf rhg rhh rhn rho rhr rna rnc rng rnh rnn rno rnr roa roc roe rof rog roh ron roo ror rra rrc rrf rrg rrh rrn rrr