-er a-a a-c a-t aaa aac aad aae aar aat aau ac- aca acc acd ace acr act acu ad- ada adc add ade adr adt adu aea aec aed aee aer aet aeu ar- ara arc ard are arr art aru at- ata atc atd ate atr att atu au- aua auc aud aue aur aut c-- caa cac cad cae car cat cau cca ccc ccd cce ccr cct ccu cda cdc cdd cde cdr cdt cdu ce- cea cec ced cee cer cet ceu cra crc crd cre crr crt cru cta ctc ctd cte ctr ctt ctu cua cuc cud cue cur cut cuu daa dac dad dae dar dat dau dca dcc dcd dce dcr dct dcu dda ddc ddd dde ddr ddt ddu de- dea dec ded dee der det deu dra drc drd dre drr drt dru dta dtc dtd dte dtr dtt dtu dua duc dud due dur dut eaa eac ead eae ear eat eau ec- eca ecc ecd ece ecr ect ecu ed- eda edc edd ede edr edt edu eea eec eed eee eer eet era erc erd ere err ert eru eta etc etd ete etr ett etu eu- eua euc eud eue eur eut ra- raa rac rad rae rar rat rau rca rcc rcd rce rcr rct rcu rda rdc rdd rde rdr rdt rdu re- rea rec red ree rer ret reu rra rrc rrd rrr rrt rru rta rtc rtd rte rtr rtt rtu rua ruc rud rue rur rut ruu taa tac tad tae tar tat tau tca tcc tcd tce tcr tct tcu tda tdc tdd tde tdr tdt tdu te- tea tec ted tee ter tet teu tra trc trd tre trr trt tru tta ttc ttd tte ttr ttt ttu tua tuc tud tue tur tut tuu ua- uaa uac uad uae uar uat uau uca ucc ucd uce ucr uct ucu uda udc udd ude udr udt udu uea uec ued uee uer uet ur- ura urc urd ure urr urt uru uta utc utd ute utr utt utu uua uuc uue uur uut uuu