-er a-a a-c aaa aac aae aag aah aan aao aar aas ac- aca acc ace acg ach acn aco acr acs aea aec aee aeg aeh aen aeo aer aes ag- aga agc age agg agh agn ago agr ags aha ahc ahe ahg ahh ahn aho ahr ahs an- ana anc ane ang anh ann ano anr ans aoa aoc aoe aog aoh aon aoo aor aos ar- ara arc are arg arh arn aro arr ars as- asa asc ase asg ash asn aso asr ass c-- caa cac cae cag cah can cao car cas cca ccc cce ccg cch ccn cco ccr ccs ce- cea cec cee ceg ceh cen ceo cer ces cga cgc cge cgg cgh cgn cgo cgr cgs ch- cha chc che chg chh chn cho chr chs cn- cna cnc cne cng cnh cnn cno cnr cns co- coa coc coe cog coh con coo cor cos cra crc cre crg crh crn cro crr crs csa csc cse csg csh csn cso csr css eaa eac eae eag eah ean eao ear eas ec- eca ecc ece ecg ech ecn eco ecr ecs eea eec eee eeg een eeo eer ees ega egc ege egg egh egn ego egr egs eha ehc ehe ehg ehh ehn eho ehr ehs en- ena enc ene eng enh enn eno enr ens eo- eoa eoc eoe eog eoh eon eoo eor eos era erc ere erg erh ern ero err ers es- esa esc ese esg esh esn eso esr ess gaa gac gae gag gah gan gao gar gas gca gcc gce gcg gch gcn gco gcr gcs ge- gea gec gee geg geh gen geo ger ges gga ggc ggg ggh ggn ggo ggr ggs gha ghc ghe ghg ghh ghn gho ghr ghs gna gnc gne gnn gno gnr gns goa goc goe gog goh gon goo gor gos gra grc gre grg grh grn gro grr grs gsa gsc gse gsg gsn gso gsr gss haa hac hae hag hah han hao har has hca hcc hce hcg hch hcn hco hcr hcs he- hea hec hee heg heh hen heo her hes hga hgc hge hgg hgh hgn hgo hgr hgs hha hhc hhe hhg hhh hhn hho hhr hhs hna hnc hne hng hnh hnn hno hns hoa hoc hoe hog hoh hon hoo hor hos hr- hra hrc hre hrg hrh hrn hro hrr hrs hsa hsc hse hsg hsh hsn hsr hss naa nac nae nag nah nan nao nar nas nca ncc nce ncg nch ncn nco ncr ncs ne- nea nec nee neg neh nen neo ner nes nga ngc nge ngg ngh ngn ngo ngs nha nhc nhe nhg nhh nhn nhr nhs nna nnc nne nng nnh nnn nno nns no- noa noc noe nog noh non noo nor nos nra nrc nre nrg nrn nro nrr nrs nsa nsc nse nsg nsh nsn nso nsr nss oaa oac oae oag oah oan oao oar oas oc- oca occ ocg och ocn oco ocr ocs oea oec oee oeg oeh oen oeo oer oes oga ogc oge ogg ogh ogn ogo ogs oha ohc ohe ohg ohh ohn oho ohr ohs on- ona onc one ong onh onn ono onr ons oo- ooa ooc oog ooh oon ooo oor oos or- ora orc ore org orh orn oro orr ors os- osa osc ose osg osh osn oso osr oss ra- raa rac rae rag rah ran rao rar ras rca rcc rce rcg rch rcn rco rcr rcs re- rea rec ree reg reh ren reo rer res rga rgc rge rgg rgh rgn rgo rgr rgs rh- rha rhc rhe rhg rhh rhn rho rhr rhs rna rnc rng rnh rnn rno rnr rns roa roc roe rog roh ron roo ror ros rra rrc rrg rrh rrn rrr rrs rsa rsc rse rsg rsh rsn rso rsr rss saa sac sae sag sah san sao sar sas sca scc sce scg sch scn sco scr scs se- sea sec see seg seh sen seo ser ses sga sgc sge sgg sgh sgn sgo sgr sgs sh- sha shc she shg shh shn sho shr shs sna snc sne sng snn sno snr sns soa soc soe sog soh son soo sor sos sr- sra src sre srg srh srn sro srr srs ss- ssa ssc sse ssg ssh ssn sso ssr sss