-er a-a a-c a-t aaa aac aad aae aar aas aat aau ac- aca acc acd ace acr acs act acu ad- ada adc add ade adr ads adt adu aea aec aed aee aer aes aet aeu ar- ara arc ard are arr ars art aru as- asa asc asd ase asr ass ast asu at- ata atc atd ate atr ats att atu au- aua auc aud aue aur aus aut c-- caa cac cad cae car cas cat cau cca ccc ccd cce ccr ccs cct ccu cda cdc cdd cde cdr cds cdt cdu ce- cea cec ced cee cer ces cet ceu cra crc crd cre crr crs crt cru csa csc csd cse csr css cst csu cta ctc ctd cte ctr cts ctt ctu cua cuc cud cue cur cus cut cuu daa dac dad dae dar das dat dau dca dcc dcd dce dcr dcs dct dcu dda ddc ddd dde ddr dds ddt ddu de- dea dec ded dee der des det deu dra drc drd dre drr drs drt dru dsa dsc dsd dse dsr dss dst dsu dta dtc dtd dte dtr dts dtt dtu dua duc dud due dur dus dut eaa eac ead eae ear eas eat eau ec- eca ecc ecd ece ecr ecs ect ecu ed- eda edc edd ede edr eds edt edu eea eec eed eee eer ees eet era erc erd ere err ers ert eru es- esa esc esd ese esr ess est esu eta etc etd ete etr ets ett etu eu- eua euc eud eue eur eus eut ra- raa rac rad rae rar ras rat rau rca rcc rcd rce rcr rcs rct rcu rda rdc rdd rde rdr rds rdt rdu re- rea rec red ree rer res ret reu rra rrc rrd rrr rrs rrt rru rsa rsc rsd rse rsr rss rst rsu rta rtc rtd rte rtr rts rtt rtu rua ruc rud rue rur rus rut ruu saa sac sad sae sar sas sat sau sca scc scd sce scr scs sct scu sda sdc sdd sde sdr sds sdt sdu se- sea sec sed see ser ses set seu sr- sra src srd sre srr srs srt ss- ssa ssc ssd sse ssr sss sst ssu sta stc std ste str sts stt stu sua suc sud sue sur sus sut suu taa tac tad tae tar tas tat tau tca tcc tcd tce tcr tcs tct tcu tda tdc tdd tde tdr tds tdt tdu te- tea tec ted tee ter tes tet teu tra trc trd tre trr trs trt tru tsa tsc tsd tse tsr tss tst tsu tta ttc ttd tte ttr tts ttt ttu tua tuc tud tue tur tus tut tuu ua- uaa uac uad uae uar uas uat uau uca ucc ucd uce ucr ucs uct ucu uda udc udd ude udr uds udt udu uea uec ued uee uer ues uet ur- ura urc urd ure urr urs urt uru usa usc usd use usr uss ust usu uta utc utd ute utr uts utt utu uua uuc uue uur uus uut uuu