-er a-a a-c aaa aac aae aag aaj aak aam aao aar ac- aca acc ace acg acj ack acm aco acr aea aec aee aeg aej aek aem aeo aer ag- aga agc age agg agj agk agm ago agr aja ajc aje ajj ajk ajm ajo ajr aka akc ake akg akj akk akm ako akr ama amc ame amg amk amm amo amr aoa aoc aoe aog aoj aok aom aoo aor ar- ara arc are arg arj ark arm aro arr c-- c-j caa cac cae cag caj cak cam cao car cca ccc cce ccg ccj cck ccm cco ccr ce- cea cec cee ceg cej cek cem ceo cer cga cgc cge cgg cgm cgo cgr cja cjc cjg cjk cjr cka ckc ckm cko cma cmc cme cmg cmj cmk cmm cmo cmr co- coa coc coe cog coj cok com coo cor cra crc cre crg crj crk crm cro crr eaa eac eae eag eaj eak eam eao ear ec- eca ecc ece ecg ecj eck ecm eco ecr eea eec eee eeg eek eem eeo eer ega egc ege egg egm ego egr eja ejc ejo eka ekc eke ekg eko ekr em- ema emc eme emg emk emm emo emr eo- eoa eoc eoe eog eok eom eoo eor era erc ere erg erk erm ero err gaa gac gae gag gaj gak gam gao gar gca gcc gce gcg gck gcm gco gcr ge- gea gec gee geg gek gem geo ger gga ggc ggg ggj ggm ggo ggr gja gjc gje gjg gjr gka gkm gko gma gmc gme gmg gmj gmm gmo gmr goa goc goe gog gok gom goo gor gra grc gre grg grj grk grm gro grr jaa jac jae jag jaj jak jam jao jar jca jcc jce jck jcm jco jcr jea jec jee jeg jej jek jem jeo jer jga jge jgo jgr jja jjc jjg jjj jjk jjr jka jkk jkm jko jkr jma jmc jme jmj jmm jmo jmr joa joc joe jog joj jok jom joo jor jra jrc jrg jrk jrm jro jrr ka- kaa kac kae kag kaj kak kam kao kar kca kcc kce kcg kck kcm kcr ke- kea kec kee keg kek kem keo ker kga kgc kgm kgo kjc kje kjr kkc kke kkk kkm kkr kma kmc kme kmg kmj kmk kmm kmo koa koc koe kog kok kom koo kor kra krc krg krk kro krr m-o m-r maa mac mae mag maj mak mam mao mar mc- mca mcc mce mcg mck mcm mco mcr mea mec mee meg mej mek mem meo mer mga mgc mge mgj mgk mgm mgo mgr mjc mje mjj mjk mjm mjr mka mkc mke mkg mkk mkm mko mkr mma mmc mme mmg mmj mmk mmm mmo mmr moa moc moe mog mok mom moo mor mra mrc mre mrg mrj mrk mrm mro mrr oaa oac oae oag oaj oak oam oao oar oc- oca occ ocg ocj ock ocm oco ocr oea oec oee oeg oem oeo oer oga ogc oge ogg ogo oja ojc oje ojm ojo oka okc oke okg okj okk oko okr om- oma omc ome omg omj omm omo omr oo- ooa ooc oog ook oom ooo oor or- ora orc ore org ork orm oro orr ra- raa rac rae rag raj rak ram rao rar rca rcc rce rcg rcj rcm rco rcr re- rea rec ree reg rek rem reo rer rga rgc rge rgg rgk rgo rgr rja rjc rjg rjk rjm rjr rkc rke rkg rkk rkm rko rma rmc rme rmg rmm rmo rmr roa roc roe rog roj rok rom roo ror rra rrc rrg rrk rrm rrr