a-a a-c a-z aaa aac aae aag aam aao aaz ac- aca acc ace acg acm aco acz aea aec aee aeg aem aeo aez ag- aga agc age agg agm ago agz ama amc ame amg amm amo amz aoa aoc aoe aog aom aoo az- aza aze azg azm azo azz c-- caa cac cae cag cam cao caz cca ccc cce ccg ccm cco ccz ce- cea cec cee ceg cem ceo cez cga cgc cge cgg cgm cgo cma cmc cme cmg cmm cmo co- coa coc coe cog com coo coz cz- czc cze czm czo eaa eac eae eag eam eao eaz ec- eca ecc ece ecg ecm eco eea eec eee eeg eem eeo ega egc ege egg egm ego em- ema emc eme emg emm emo eo- eoa eoc eoe eog eom eoo eze ezo ezz gaa gac gae gag gam gao gaz gca gcc gce gcg gcm gco ge- gea gec gee geg gem geo gez gga ggc ggg ggm ggo ggz gma gmc gme gmg gmm gmo gmz goa goc goe gog gom goo goz gza gzo m-o maa mac mae mag mam mao maz mc- mca mcc mce mcg mcm mco mcz mea mec mee meg mem meo mez mga mgc mge mgm mgo mgz mma mmc mme mmg mmm mmo mmz moa moc moe mog mom moo moz mza mzm oaa oac oae oag oam oao oc- oca occ ocg ocm oco ocz oea oec oee oeg oem oeo oga ogc oge ogg ogo om- oma omc ome omg omm omo omz oo- ooa ooc oog oom ooo oza oze ozm ozo ozz z-g zaa zac zag zam zao zaz zce zco zea zec zee zem zeo zez zgg zma zmc zmm zo- zoa zoc zoe zog zom zoo zzz