-er a-a a-c aaa aac aae aag aam aao aap aar aas ac- aca acc ace acg acm aco acp acr acs aea aec aee aeg aem aeo aep aer aes ag- aga agc age agg agm ago agp agr ags ama amc ame amg amm amo amp amr ams aoa aoc aoe aog aom aoo aop aor aos ap- apa apc ape apg apm apo app apr aps ar- ara arc are arg arm aro arp arr ars as- asa asc ase asg asm aso asp asr ass c-- caa cac cae cag cam cao cap car cas cca ccc cce ccg ccm cco ccp ccr ccs ce- cea cec cee ceg cem ceo cep cer ces cga cgc cge cgg cgm cgo cgp cgr cgs cma cmc cme cmg cmm cmo cmp cmr cms co- coa coc coe cog com coo cop cor cos cpa cpc cpe cpg cpm cpo cpp cpr cps cra crc cre crg crm cro crp crr crs csa csc cse csg csm cso csp csr css eaa eac eae eag eam eao eap ear eas ec- eca ecc ece ecg ecm eco ecr ecs eea eec eee eeg eem eeo eep eer ees ega egc ege egg egm ego egp egr egs em- ema emc eme emg emm emo emp emr ems eo- eoa eoc eoe eog eom eoo eop eor eos ep- epa epc epe epg epm epo epp epr eps era erc ere erg erm ero erp err ers es- esa esc ese esg esm eso esp esr ess g-p gaa gac gae gag gam gao gap gar gas gca gcc gce gcg gcm gco gcp gcr gcs ge- gea gec gee geg gem geo gep ger ges gga ggc ggg ggm ggo ggp ggr ggs gma gmc gme gmg gmm gmo gmp gmr gms goa goc goe gog gom goo gop gor gos gpa gpc gpe gpg gpm gpo gpp gpr gps gra grc gre grg grm gro grp grr grs gsa gsc gse gsg gsm gso gsp gsr gss m-o m-r maa mac mae mag mam mao map mar mas mc- mca mcc mce mcg mcm mco mcp mcr mcs mea mec mee meg mem meo mep mer mes mga mgc mge mgm mgo mgp mgr mgs mma mmc mme mmg mmm mmo mmp mmr mms moa moc moe mog mom moo mop mor mos mpa mpc mpe mpg mpm mpo mpp mpr mps mra mrc mre mrg mrm mro mrp mrr mrs msa msc mse msg msm mso msp msr mss oaa oac oae oag oam oao oap oar oas oc- oca occ ocg ocm oco ocp ocr ocs oea oec oee oeg oem oeo oep oer oes oga ogc oge ogg ogo ogp ogs om- oma omc ome omg omm omo omp omr oms oo- ooa ooc oog oom ooo oop oor oos op- opa opc ope opg opm opo opp opr ops or- ora orc ore org orm oro orp orr ors os- osa osc ose osg osm oso osp osr oss p-p paa pac pae pag pam pao pap par pas pca pcc pce pcg pcm pco pcp pcr pcs pea pec pee peg pem peo pep per pes pga pgc pge pgg pgm pgo pgp pgr pgs pma pmc pme pmg pmm pmo pmp pmr pms poa poc poe pog pom poo pop por pos ppa ppc ppe ppg ppm ppo ppp ppr pps pra prc pre prg prm pro prp prr prs ps- psa psc pse psg psm pso psp psr pss ra- raa rac rae rag ram rao rap rar ras rca rcc rce rcg rcm rco rcp rcr rcs re- rea rec ree reg rem reo rep rer res rga rgc rge rgg rgo rgp rgr rgs rma rmc rme rmg rmm rmo rmp rmr rms roa roc roe rog rom roo rop ror ros rpa rpc rpe rpg rpm rpo rpp rpr rps rra rrc rrg rrm rrp rrr rrs rsa rsc rse rsg rsm rso rsp rsr rss saa sac sae sag sam sao sap sar sas sca scc sce scg scm sco scp scr scs se- sea sec see seg sem seo sep ser ses sga sgc sge sgg sgm sgo sgp sgr sgs sma smc sme smg smm smo smp smr sms soa soc soe sog som soo sop sor sos spa spc spe spg spm spo spp spr sps sr- sra src sre srg srm sro srp srr srs ss- ssa ssc sse ssg ssm sso ssp ssr sss