a-a a-c a-t aaa aac aad aaf aar aat aau ac- aca acc acd acf acr act acu ad- ada adc add adf adr adt adu af- afa afc afd aff afr aft afu ar- ara arc ard arf arr art aru at- ata atc atd atf atr att atu au- aua auc aud auf aur aut c-- caa cac cad caf car cat cau cca ccc ccd ccf ccr cct ccu cda cdc cdd cdf cdr cdt cdu cfa cfc cfd cff cfr cft cfu cra crc crd crf crr crt cru cta ctc ctd ctf ctr ctt ctu cua cuc cud cuf cur cut cuu daa dac dad daf dar dat dau dca dcc dcd dcf dcr dct dcu dda ddc ddd ddf ddr ddt ddu dfa dfc dfd dff dfr dft dfu dra drc drd drr drt dru dta dtc dtd dtf dtr dtt dtu dua duc dud duf dur dut faa fac fad faf far fat fau fca fcc fcd fcf fcr fct fcu fda fdc fdd fdf fdr fdt fdu ffa ffc ffd fff ffr fft ffu fra frc frd frf frr frt fru fta ftc ftd ftf ftr ftt ftu fua fud fuf fur fut fuu ra- raa rac rad raf rar rat rau rca rcc rcd rcf rcr rct rcu rda rdc rdd rdf rdr rdt rdu rfa rfc rfd rff rfr rft rfu rra rrc rrd rrf rrr rrt rru rta rtc rtd rtf rtr rtt rtu rua ruc rud ruf rur rut ruu taa tac tad taf tar tat tau tca tcc tcd tcf tcr tct tcu tda tdc tdd tdf tdr tdt tdu tfa tfc tfd tff tfr tft tfu tra trc trd trf trr trt tru tta ttc ttd ttf ttr ttt ttu tua tuc tud tuf tur tut tuu ua- uaa uac uad uaf uar uat uau uca ucc ucd ucf ucr uct ucu uda udc udd udf udr udt udu ufa ufc ufd uff ufr uft ufu ur- ura urc urd urf urr urt uru uta utc utd utf utr utt utu uua uuc uur uut uuu