a-a a-c aaa aac aag aak aao aas aau ac- aca acc acg ack aco acs acu ag- aga agc agg agk ago ags agu aka akc akg akk ako aks aku aoa aoc aog aok aoo aos aou as- asa asc asg ask aso ass asu au- aua auc aug auk auo aus c-- caa cac cag cak cao cas cau cca ccc ccg cck cco ccs ccu cga cgc cgg cgo cgs cgu cka ckc cko cks co- coa coc cog cok coo cos cou csa csc csg csk cso css csu cua cuc cug cuk cuo cus cuu gaa gac gag gak gao gas gau gca gcc gcg gck gco gcs gcu gga ggc ggg ggo ggs ggu gka gko gks goa goc gog gok goo gos gou gsa gsc gsg gsk gso gss gsu gu- gua guc gug guk guo gus guu ka- kaa kac kag kak kao kas kau kca kcc kcg kck kcs kcu kga kgc kgo kgs kgu kkc kkk kks kku koa koc kog kok koo kos kou ksa ksc ksg ksk kso kss ksu kuc kug kuk kus kuu oaa oac oag oak oao oas oau oc- oca occ ocg ock oco ocs ocu oga ogc ogg ogo ogs oka okc okg okk oko oks oku oo- ooa ooc oog ook ooo oos os- osa osc osg osk oso oss osu ou- oua ouc ouk ouo ous saa sac sag sak sao sas sau sca scc scg sck sco scs scu sga sgc sgg sgk sgo sgs sgu sk- ska skc skg skk sko sks sku soa soc sog sok soo sos sou ss- ssa ssc ssg ssk sso sss ssu sua suc sug suk suo sus suu ua- uaa uac uag uak uao uas uau uca ucc ucg uck uco ucs ucu uga ugc ugg ugk ugo ugs ugu uka ukc ukk uku uoa uoc uog uok uoo uos usa usc usg usk uso uss usu uua uuc uug uus uuu