-er a-a a-c aaa aac aad aae aag aam aan aao aar ac- aca acc acd ace acg acm acn aco acr ad- ada adc add ade adg adm adn ado adr aea aec aed aee aeg aem aen aeo aer ag- aga agc agd age agg agm agn ago agr ama amc amd ame amg amm amn amo amr an- ana anc and ane ang anm ann ano anr aoa aoc aod aoe aog aom aon aoo aor ar- ara arc ard are arg arm arn aro arr c-- caa cac cad cae cag cam can cao car cca ccc ccd cce ccg ccm ccn cco ccr cda cdc cdd cde cdg cdm cdn cdo cdr ce- cea cec ced cee ceg cem cen ceo cer cga cgc cgd cge cgg cgm cgn cgo cgr cma cmc cmd cme cmg cmm cmn cmo cmr cn- cna cnc cnd cne cng cnm cnn cno cnr co- coa coc cod coe cog com con coo cor cra crc crd cre crg crm crn cro crr daa dac dad dae dag dam dan dao dar dca dcc dcd dce dcg dcm dcn dco dcr dda ddc ddd dde ddg ddm ddn ddo ddr de- dea dec ded dee deg dem den deo der dga dgc dgd dge dgg dgm dgn dgr dma dmc dmd dme dmg dmm dmn dmo dmr dna dnc dnd dne dng dnm dnn dno dnr doa doc dod doe dog dom don doo dor dra drc drd dre drg drm drn dro drr eaa eac ead eae eag eam ean eao ear ec- eca ecc ecd ece ecg ecm ecn eco ecr ed- eda edc edd ede edg edm edn edo edr eea eec eed eee eeg eem een eeo eer ega egc egd ege egg egm egn ego egr em- ema emc emd eme emg emm emn emo emr en- ena enc end ene eng enm enn eno enr eo- eoa eoc eod eoe eog eom eon eoo eor era erc erd ere erg erm ern ero err g-d gaa gac gad gae gag gam gan gao gar gca gcc gcd gce gcg gcm gcn gco gcr gda gdc gdd gde gdm gdn gdo gdr ge- gea gec ged gee geg gem gen geo ger gga ggc ggd ggg ggm ggn ggo ggr gma gmc gmd gme gmg gmm gmn gmo gmr gna gnc gnd gne gnm gnn gno gnr goa goc god goe gog gom gon goo gor gra grc grd gre grg grm grn gro grr m-o m-r maa mac mad mae mag mam man mao mar mc- mca mcc mcd mce mcg mcm mcn mco mcr mda mdc mdd mde mdg mdm mdn mdo mdr mea mec med mee meg mem men meo mer mga mgc mgd mge mgm mgn mgo mgr mma mmc mmd mme mmg mmm mmn mmo mmr mna mnc mne mng mnm mnn mno mnr moa moc mod moe mog mom mon moo mor mra mrc mrd mre mrg mrm mrn mro mrr naa nac nad nae nag nam nan nao nar nca ncc ncd nce ncg ncm ncn nco ncr nda ndc ndd nde ndg ndm ndn ndo ndr ne- nea nec ned nee neg nem nen neo ner nga ngc ngd nge ngg ngm ngn ngo nma nmc nmd nme nmg nmm nmn nmo nmr nna nnc nne nng nnm nnn nno no- noa noc nod noe nog nom non noo nor nra nrc nrd nre nrg nrm nrn nro nrr oaa oac oad oae oag oam oan oao oar oc- oca occ ocd ocg ocm ocn oco ocr oda odc odd ode odg odm odn odo odr oea oec oed oee oeg oem oen oeo oer oga ogc ogd oge ogg ogn ogo om- oma omc omd ome omg omm omn omo omr on- ona onc ond one ong onn ono onr oo- ooa ooc ood oog oom oon ooo oor or- ora orc ord ore org orm orn oro orr ra- raa rac rad rae rag ram ran rao rar rca rcc rcd rce rcg rcm rcn rco rcr rda rdc rdd rde rdg rdm rdn rdo rdr re- rea rec red ree reg rem ren reo rer rga rgc rgd rge rgg rgn rgo rgr rma rmc rmd rme rmg rmm rmn rmo rmr rna rnc rnd rng rnm rnn rno rnr roa roc rod roe rog rom ron roo ror rra rrc rrd rrg rrm rrn rrr