a-a a-c aaa aac aag aam aao aar aax ac- aca acc acg acm aco acr acx ag- aga agc agg agm ago agr agx ama amc amg amm amo amr amx aoa aoc aog aom aoo aor aox ar- ara arc arg arm aro arr arx ax- axa axm axo axr axx c-- caa cac cag cam cao car cax cca ccc ccg ccm cco ccr ccx cga cgc cgg cgm cgo cgr cma cmc cmg cmm cmo cmr cmx co- coa coc cog com coo cor cox cra crc crg crm cro crr crx cxc cxo cxr cxx gaa gac gag gam gao gar gca gcc gcg gcm gco gcr gga ggc ggg ggm ggo ggr gma gmc gmg gmm gmo gmr gmx goa goc gog gom goo gor gox gra grc grg grm gro grr grx gxa m-o m-r maa mac mag mam mao mar max mc- mca mcc mcg mcm mco mcr mcx mga mgc mgm mgo mgr mgx mma mmc mmg mmm mmo mmr mmx moa moc mog mom moo mor mox mra mrc mrg mrm mro mrr mrx mxa mxc mxr oaa oac oag oam oao oar oax oc- oca occ ocg ocm oco ocr ocx oga ogc ogg ogo ogx om- oma omc omg omm omo omr omx oo- ooa ooc oog oom ooo oor oox or- ora orc org orm oro orr orx ox- oxa oxc oxo oxx ra- raa rac rag ram rao rar rax rca rcc rcg rcm rco rcr rcx rga rgc rgg rgo rgr rgx rma rmc rmg rmm rmo rmr rmx roa roc rog rom roo ror rox rra rrc rrg rrm rrr rxr xaa xac xag xam xar xcr xcx xma xmc xmg xmm xmo xmr xmx xoa xoc xog xom xoo xor xox xrc xrx xxo xxx