-er a-a a-c a-t aaa aac aad aae aaf aak aar aat aau ac- aca acc acd ace acf ack acr act acu ad- ada adc add ade adf adk adr adt adu aea aec aed aee aef aek aer aet aeu af- afa afc afd afe aff afk afr aft afu aka akc akd ake akk akr aku ar- ara arc ard are arf ark arr art aru at- ata atc atd ate atf atr att atu au- aua auc aud aue auf auk aur aut c-- caa cac cad cae caf cak car cat cau cca ccc ccd cce ccf cck ccr cct ccu cda cdc cdd cde cdf cdk cdr cdt cdu ce- cea cec ced cee cef cek cer cet ceu cfa cfc cfd cfe cff cfk cfr cft cfu cka ckc ckd ckt cra crc crd cre crf crk crr crt cru cta ctc ctd cte ctf ctk ctr ctt ctu cua cuc cud cue cuf cuk cur cut cuu daa dac dad dae daf dak dar dat dau dca dcc dcd dce dcf dck dcr dct dcu dda ddc ddd dde ddf ddk ddr ddt ddu de- dea dec ded dee def dek der det deu dfa dfc dfd dfe dff dfk dfr dft dfu dka dkc dke dkk dkr dkt dku dra drc drd dre drk drr drt dru dta dtc dtd dte dtf dtk dtr dtt dtu dua duc dud due duf duk dur dut eaa eac ead eae eaf eak ear eat eau ec- eca ecc ecd ece ecf eck ecr ect ecu ed- eda edc edd ede edf edk edr edt edu eea eec eed eee eef eek eer eet ef- efa efc efd efe eff efr eft eka ekc ekd eke ekf ekr ekt eku era erc erd ere erf erk err ert eru eta etc etd ete etf etk etr ett etu eu- eua euc eud eue euf eur eut faa fac fad fae faf fak far fat fau fca fcc fcd fce fcf fck fcr fct fcu fda fdc fdd fde fdf fdk fdr fdt fdu fea fec fed fee fef fek fer fet feu ffa ffc ffd ffe fff ffk ffr fft ffu fka fkc fkf fkk fkt fra frc frd fre frf frk frr frt fru fta ftc ftd fte ftf ftk ftr ftt ftu fua fud fue fuf fuk fur fut fuu k-t ka- kaa kac kad kae kaf kak kar kat kau kca kcc kcd kce kck kcr kct kcu kda kdc kde kdf kdk kdr kdt kdu ke- kea kec ked kee kef kek ker ket kfa kfc kfd kff kfu kkc kke kkk kkr kkt kku kra krc krd krf krk krr krt kru kta ktc kte ktf ktk ktr ktt ktu kuc kud kue kuk kur kut kuu ra- raa rac rad rae raf rak 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 rek rer ret reu rfa rfc rfd rfe rff rfk rfr rft rfu rkc rke rkf rkk rkt rku rra rrc rrd rrf rrk rrr rrt rru rta rtc rtd rte rtf rtk rtr rtt rtu rua ruc rud rue ruf ruk rur rut ruu taa tac tad tae taf tak tar tat tau tca tcc tcd tce tcf tck tcr tct tcu tda tdc tdd tde tdf tdk tdr tdt tdu te- tea tec ted tee tef tek ter tet teu tfa tfc tfd tfe tff tfk tfr tft tfu tka tkc tke tkk tkr tkt tra trc trd tre trf trk trr trt tru tta ttc ttd tte ttf ttk ttr ttt ttu tua tuc tud tue tuf tuk tur tut tuu ua- uaa uac uad uae uaf uak uar uat uau uca ucc ucd uce ucf uck ucr uct ucu uda udc udd ude udf udk udr udt udu uea uec ued uee uef uer uet ufa ufc ufd ufe uff ufr uft ufu uka ukc uke ukf ukk ukr uku ur- ura urc urd ure urf urk urr urt uru uta utc utd ute utf utk utr utt utu uua uuc uue uur uut uuu