a-a a-c aaa aac aae aak aas aau ac- aca acc ace ack acs acu aea aec aee aek aes aeu aka akc ake akk aks aku as- asa asc ase ask ass asu au- aua auc aue auk aus c-- caa cac cae cak cas cau cca ccc cce cck ccs ccu ce- cea cec cee cek ces ceu cka ckc cks csa csc cse csk css csu cua cuc cue cuk cus cuu eaa eac eae eak eas eau ec- eca ecc ece eck ecs ecu eea eec eee eek ees eka ekc eke eks eku es- esa esc ese esk ess esu eu- eua euc eue eus ka- kaa kac kae kak kas kau kca kcc kce kck kcs kcu ke- kea kec kee kek kes kkc kke kkk kks kku ksa ksc kse ksk kss ksu kuc kue kuk kus kuu saa sac sae sak sas sau sca scc sce sck scs scu se- sea sec see sek ses seu sk- ska skc ske skk sks sku ss- ssa ssc sse ssk sss ssu sua suc sue suk sus suu ua- uaa uac uae uak uas uau uca ucc uce uck ucs ucu uea uec uee ues uka ukc uke ukk uku usa usc use usk uss usu uua uuc uue uus uuu