a-a a-c a-t aaa aac aak aao aar aas aat aau ac- aca acc ack aco acr acs act acu aka akc akk ako akr aks aku aoa aoc aok aoo aor aos aot aou ar- ara arc ark aro arr ars art aru as- asa asc ask aso asr ass ast asu at- ata atc ato atr ats att atu au- aua auc auk auo aur aus aut c-- caa cac cak cao car cas cat cau cca ccc cck cco ccr ccs cct ccu cka ckc cko cks ckt co- coa coc cok coo cor cos cot cou cra crc crk cro crr crs crt cru csa csc csk cso csr css cst csu cta ctc ctk cto ctr cts ctt ctu cua cuc cuk cuo cur cus cut cuu k-t ka- kaa kac kak kao kar kas kat kau kca kcc kck kcr kcs kct kcu kkc kkk kkr kks kkt kku koa koc kok koo kor kos kot kou kra krc krk kro krr krs krt kru ksa ksc ksk kso ksr kss kst ksu kta ktc ktk kto ktr kts ktt ktu kuc kuk kur kus kut kuu oaa oac oak oao oar oas oat oau oc- oca occ ock oco ocr ocs oct ocu oka okc okk oko okr oks oku oo- ooa ooc ook ooo oor oos oot or- ora orc ork oro orr ors ort oru os- osa osc osk oso osr oss ost osu ot- ota otc otk oto otr ots ott otu ou- oua ouc ouk ouo our ous out ra- raa rac rak rao rar ras rat rau rca rcc rco rcr rcs rct rcu rkc rkk rko rks rkt rku roa roc rok roo ror ros rot rou rra rrc rrk rrr rrs rrt rru rsa rsc rsk rso rsr rss rst rsu rta rtc rtk rto rtr rts rtt rtu rua ruc ruk ruo rur rus rut ruu saa sac sak sao sar sas sat sau sca scc sck sco scr scs sct scu sk- ska skc skk sko skr sks skt sku soa soc sok soo sor sos sot sou sr- sra src srk sro srr srs srt ss- ssa ssc ssk sso ssr sss sst ssu sta stc stk sto str sts stt stu sua suc suk suo sur sus sut suu taa tac tak tao tar tas tat tau tca tcc tck tco tcr tcs tct tcu tka tkc tkk tko tkr tks tkt to- toa toc tok too tor tos tot tou tra trc trk tro trr trs trt tru tsa tsc tsk tso tsr tss tst tsu tta ttc ttk tto ttr tts ttt ttu tua tuc tuk tuo tur tus tut tuu ua- uaa uac uak uao uar uas uat uau uca ucc uck uco ucr ucs uct ucu uka ukc ukk ukr uku uoa uoc uok uoo uor uos uot ur- ura urc urk uro urr urs urt uru usa usc usk uso usr uss ust usu uta utc utk uto utr uts utt utu uua uuc uur uus uut uuu