a-a a-c a-t aaa aac aao aar aas aat aau ac- aca acc aco acr acs act acu aoa aoc aoo aor aos aot aou ar- ara arc aro arr ars art aru as- asa asc aso asr ass ast asu at- ata atc ato atr ats att atu au- aua auc auo aur aus aut c-- caa cac cao car cas cat cau cca ccc cco ccr ccs cct ccu co- coa coc coo cor cos cot cou cra crc cro crr crs crt cru csa csc cso csr css cst csu cta ctc cto ctr cts ctt ctu cua cuc cuo cur cus cut cuu oaa oac oao oar oas oat oau oc- oca occ oco ocr ocs oct ocu oo- ooa ooc ooo oor oos oot or- ora orc oro orr ors ort oru os- osa osc oso osr oss ost osu ot- ota otc oto otr ots ott otu ou- oua ouc ouo our ous out ra- raa rac rao rar ras rat rau rca rcc rco rcr rcs rct rcu roa roc roo ror ros rot rou rra rrc rrr rrs rrt rru rsa rsc rso rsr rss rst rsu rta rtc rto rtr rts rtt rtu rua ruc ruo rur rus rut ruu saa sac sao sar sas sat sau sca scc sco scr scs sct scu soa soc soo sor sos sot sou sr- sra src sro srr srs srt ss- ssa ssc sso ssr sss sst ssu sta stc sto str sts stt stu sua suc suo sur sus sut suu taa tac tao tar tas tat tau tca tcc tco tcr tcs tct tcu to- toa toc too tor tos tot tou tra trc tro trr trs trt tru tsa tsc tso tsr tss tst tsu tta ttc tto ttr tts ttt ttu tua tuc tuo tur tus tut tuu ua- uaa uac uao uar uas uat uau uca ucc uco ucr ucs uct ucu uoa uoc uoo uor uos uot ur- ura urc uro urr urs urt uru usa usc uso usr uss ust usu uta utc uto utr uts utt utu uua uuc uur uus uut uuu