a-a a-c aaa aac aaf aag aam aao aar ac- aca acc acf acg acm aco acr af- afa afc aff afg afm afo afr ag- aga agc agf agg agm ago agr ama amc amf amg amm amo amr aoa aoc aof aog aom aoo aor ar- ara arc arf arg arm aro arr c-- caa cac caf cag cam cao car cca ccc ccf ccg ccm cco ccr cfa cfc cff cfg cfm cfo cfr cga cgc cgg cgm cgo cgr cma cmc cmf cmg cmm cmo cmr co- coa coc cof cog com coo cor cra crc crf crg crm cro crr faa fac faf fag fam fao far fca fcc fcf fcg fcm fco fcr ffa ffc fff ffg ffm ffo ffr fga fgc fgf fgg fgm fgr fma fmc fmf fmg fmm fmo fmr foa foc fof fog fom foo for fra frc frf frg frm fro frr gaa gac gaf gag gam gao gar gca gcc gcf gcg gcm gco gcr gfa gfc gff gfm gfo gfr gga ggc ggg ggm ggo ggr gma gmc gmf gmg gmm gmo gmr goa goc gof gog gom goo gor gra grc grf grg grm gro grr m-f m-o m-r maa mac maf mag mam mao mar mc- mca mcc mcf mcg mcm mco mcr mfa mfc mff mfg mfm mfo mfr mga mgc mgf mgm mgo mgr mma mmc mmf mmg mmm mmo mmr moa moc mof mog mom moo mor mra mrc mrf mrg mrm mro mrr oaa oac oaf oag oam oao oar oc- oca occ ocf ocg ocm oco ocr of- ofa ofc off ofg ofm ofo ofr oga ogc ogf ogg ogo om- oma omc omf omg omm omo omr oo- ooa ooc oof oog oom ooo oor or- ora orc orf org orm oro orr ra- raa rac raf rag ram rao rar rca rcc rcf rcg rcm rco rcr rfa rfc rff rfg rfm rfo rfr rga rgc rgf rgg rgo rgr rma rmc rmf rmg rmm rmo rmr roa roc rof rog rom roo ror rra rrc rrf rrg rrm rrr