a-a a-c aaa aac aag aak aan aao aar aau ac- aca acc acg ack acn aco acr acu ag- aga agc agg agk agn ago agr agu aka akc akg akk akn ako akr aku an- ana anc ang ank ann ano anr anu aoa aoc aog aok aon aoo aor aou ar- ara arc arg ark arn aro arr aru au- aua auc aug auk aun auo aur c-- caa cac cag cak can cao car cau cca ccc ccg cck ccn cco ccr ccu cga cgc cgg cgn cgo cgr cgu cka ckc cko cn- cna cnc cng cnn cno cnr cnu co- coa coc cog cok con coo cor cou cra crc crg crk crn cro crr cru cua cuc cug cuk cun cuo cur cuu gaa gac gag gak gan gao gar gau gca gcc gcg gck gcn gco gcr gcu gga ggc ggg ggn ggo ggr ggu gka gkn gko gna gnc gnn gno gnr gnu goa goc gog gok gon goo gor gou gra grc grg grk grn gro grr gru gu- gua guc gug guk gun guo gur guu ka- kaa kac kag kak kan kao kar kau kca kcc kcg kck kcn kcr kcu kga kgc kgo kgu kkc kkk kkn kkr kku kn- kna knc kng knk knn kno knr knu koa koc kog kok kon koo kor kou kra krc krg krk krn kro krr kru kuc kug kuk kun kur kuu naa nac nag nak nan nao nar nau nca ncc ncg nck ncn nco ncr ncu nga ngc ngg ngk ngn ngo ngu nka nkc nkk nkn nko nkr nku nna nnc nng nnk nnn nno nnu no- noa noc nog nok non noo nor nou nra nrc nrg nrk nrn nro nrr nru nua nuc nug nuk nun nuo nur nuu oaa oac oag oak oan oao oar oau oc- oca occ ocg ock ocn oco ocr ocu oga ogc ogg ogn ogo oka okc okg okk oko okr oku on- ona onc ong onk onn ono onr onu oo- ooa ooc oog ook oon ooo oor or- ora orc org ork orn oro orr oru ou- oua ouc ouk oun ouo our ra- raa rac rag rak ran rao rar rau rca rcc rcg rcn rco rcr rcu rga rgc rgg rgk rgn rgo rgr rkc rkg rkk rko rku rna rnc rng rnn rno rnr rnu roa roc rog rok ron roo ror rou rra rrc rrg rrk rrn rrr rru rua ruc rug ruk run ruo rur ruu ua- uaa uac uag uak uan uao uar uau uca ucc ucg uck ucn uco ucr ucu uga ugc ugg ugk ugn ugo ugr ugu uka ukc ukk ukn ukr uku un- una unc ung unk unn uno unr unu uoa uoc uog uok uon uoo uor ur- ura urc urg urk urn uro urr uru uua uuc uug uun uur uuu