a-a a-c aaa aac aae aag aak aan aas aau ac- aca acc ace acg ack acn acs acu aea aec aee aeg aek aen aes aeu ag- aga agc age agg agk agn ags agu aka akc ake akg akk akn aks aku an- ana anc ane ang ank ann ans anu as- asa asc ase asg ask asn ass asu au- aua auc aue aug auk aun aus c-- caa cac cae cag cak can cas cau cca ccc cce ccg cck ccn ccs ccu ce- cea cec cee ceg cek cen ces ceu cga cgc cge cgg cgn cgs cgu cka ckc cks cn- cna cnc cne cng cnn cns cnu csa csc cse csg csk csn css csu cua cuc cue cug cuk cun cus cuu eaa eac eae eag eak ean eas eau ec- eca ecc ece ecg eck ecn ecs ecu eea eec eee eeg eek een ees ega egc ege egg egn egs egu eka ekc eke ekg eks eku en- ena enc ene eng enk enn ens enu es- esa esc ese esg esk esn ess esu eu- eua euc eue eug eun eus gaa gac gae gag gak gan gas gau gca gcc gce gcg gck gcn gcs gcu ge- gea gec gee geg gek gen ges geu gga ggc ggg ggn ggs ggu gka gkn gks gna gnc gne gnn gns gnu gsa gsc gse gsg gsk gsn gss gsu gu- gua guc gue gug guk gun gus guu ka- kaa kac kae kag kak kan kas kau kca kcc kce kcg kck kcn kcs kcu ke- kea kec kee keg kek ken kes kga kgc kgs kgu kkc kke kkk kkn kks kku kn- kna knc kne kng knk knn knu ksa ksc kse ksg ksk ksn kss ksu kuc kue kug kuk kun kus kuu naa nac nae nag nak nan nas nau nca ncc nce ncg nck ncn ncs ncu ne- nea nec nee neg nek nen nes neu nga ngc nge ngg ngk ngn ngs ngu nka nkc nke nkk nkn nks nku nna nnc nne nng nnk nnn nns nnu nsa nsc nse nsg nsk nsn nss nsu nua nuc nue nug nuk nun nus nuu saa sac sae sag sak san sas sau sca scc sce scg sck scn scs scu se- sea sec see seg sek sen ses seu sga sgc sge sgg sgk sgn sgs sgu sk- ska skc ske skg skk sks sku sna snc sne sng snk snn sns snu ss- ssa ssc sse ssg ssk ssn sss ssu sua suc sue sug suk sun sus suu ua- uaa uac uae uag uak uan uas uau uca ucc uce ucg uck ucn ucs ucu uea uec uee ueg uen ues uga ugc uge ugg ugk ugn ugs ugu uka ukc uke ukk ukn uku un- una unc une ung unk unn uns unu usa usc use usg usk usn uss usu uua uuc uue uug uun uus uuu