a-a a-c a-t aaa aac aad aar aas aat aau ac- aca acc acd acr acs act acu ad- ada adc add adr ads adt adu ar- ara arc ard arr ars art aru as- asa asc asd asr ass ast asu at- ata atc atd atr ats att atu au- aua auc aud aur aus aut c-- caa cac cad car cas cat cau cca ccc ccd ccr ccs cct ccu cda cdc cdd cdr cds cdt cdu cra crc crd crr crs crt cru csa csc csd csr css cst csu cta ctc ctd ctr cts ctt ctu cua cuc cud cur cus cut cuu daa dac dad dar das dat dau dca dcc dcd dcr dcs dct dcu dda ddc ddd ddr dds ddt ddu dra drc drd drr drs drt dru dsa dsc dsd dsr dss dst dsu dta dtc dtd dtr dts dtt dtu dua duc dud dur dus dut ra- raa rac rad rar ras rat rau rca rcc rcd rcr rcs rct rcu rda rdc rdd rdr rds rdt rdu rra rrc rrd rrr rrs rrt rru rsa rsc rsd rsr rss rst rsu rta rtc rtd rtr rts rtt rtu rua ruc rud rur rus rut ruu saa sac sad sar sas sat sau sca scc scd scr scs sct scu sda sdc sdd sdr sds sdt sdu sr- sra src srd srr srs srt ss- ssa ssc ssd ssr sss sst ssu sta stc std str sts stt stu sua suc sud sur sus sut suu taa tac tad tar tas tat tau tca tcc tcd tcr tcs tct tcu tda tdc tdd tdr tds tdt tdu tra trc trd trr trs trt tru tsa tsc tsd tsr tss tst tsu tta ttc ttd ttr tts ttt ttu tua tuc tud tur tus tut tuu ua- uaa uac uad uar uas uat uau uca ucc ucd ucr ucs uct ucu uda udc udd udr uds udt udu ur- ura urc urd urr urs urt uru usa usc usd usr uss ust usu uta utc utd utr uts utt utu uua uuc uur uus uut uuu