-er a-a a-c a-t aaa aac aad aae aaf aar aat aau ac- aca acc acd ace acf acr act acu ad- ada adc add ade adf adr adt adu aea aec aed aee aef aer aet aeu af- afa afc afd afe aff afr aft afu ar- ara arc ard are arf arr art aru at- ata atc atd ate atf atr att atu au- aua auc aud aue auf aur aut c-- caa cac cad cae caf car cat cau cca ccc ccd cce ccf ccr cct ccu cda cdc cdd cde cdf cdr cdt cdu ce- cea cec ced cee cef cer cet ceu cfa cfc cfd cfe cff cfr cft cfu cra crc crd cre crf crr crt cru cta ctc ctd cte ctf ctr ctt ctu cua cuc cud cue cuf cur cut cuu daa dac dad dae daf dar dat dau dca dcc dcd dce dcf dcr dct dcu dda ddc ddd dde ddf ddr ddt ddu de- dea dec ded dee def der det deu dfa dfc dfd dfe dff dfr dft dfu dra drc drd dre drr drt dru dta dtc dtd dte dtf dtr dtt dtu dua duc dud due duf dur dut eaa eac ead eae eaf ear eat eau ec- eca ecc ecd ece ecf ecr ect ecu ed- eda edc edd ede edf edr edt edu eea eec eed eee eef eer eet ef- efa efc efd efe eff efr eft era erc erd ere erf err ert eru eta etc etd ete etf etr ett etu eu- eua euc eud eue euf eur eut faa fac fad fae faf far fat fau fca fcc fcd fce fcf fcr fct fcu fda fdc fdd fde fdf fdr fdt fdu fea fec fed fee fef fer fet feu ffa ffc ffd ffe fff ffr fft ffu fra frc frd fre frf frr frt fru fta ftc ftd fte ftf ftr ftt ftu fua fud fue fuf fur fut fuu ra- raa rac rad rae raf rar rat rau rca rcc rcd rce rcf rcr rct rcu rda rdc rdd rde rdf rdr rdt rdu re- rea rec red ree ref rer ret reu rfa rfc rfd rfe rff rfr rft rfu rra rrc rrd rrf rrr rrt rru rta rtc rtd rte rtf rtr rtt rtu rua ruc rud rue ruf rur rut ruu taa tac tad tae taf tar tat tau tca tcc tcd tce tcf tcr tct tcu tda tdc tdd tde tdf tdr tdt tdu te- tea tec ted tee tef ter tet teu tfa tfc tfd tfe tff tfr tft tfu tra trc trd tre trf trr trt tru tta ttc ttd tte ttf ttr ttt ttu tua tuc tud tue tuf tur tut tuu ua- uaa uac uad uae uaf uar uat uau uca ucc ucd uce ucf ucr uct ucu uda udc udd ude udf udr udt udu uea uec ued uee uef uer uet ufa ufc ufd ufe uff ufr uft ufu ur- ura urc urd ure urf urr urt uru uta utc utd ute utf utr utt utu uua uuc uue uur uut uuu