-er a-a a-c a-t aaa aac aae aaf aar aat aau ac- aca acc ace acf acr act acu aea aec aee aef aer aet aeu af- afa afc afe aff afr aft afu ar- ara arc are arf arr art aru at- ata atc ate atf atr att atu au- aua auc aue auf aur aut c-- caa cac cae caf car cat cau cca ccc cce ccf ccr cct ccu ce- cea cec cee cef cer cet ceu cfa cfc cfe cff cfr cft cfu cra crc cre crf crr crt cru cta ctc cte ctf ctr ctt ctu cua cuc cue cuf cur cut cuu eaa eac eae eaf ear eat eau ec- eca ecc ece ecf ecr ect ecu eea eec eee eef eer eet ef- efa efc efe eff efr eft era erc ere erf err ert eru eta etc ete etf etr ett etu eu- eua euc eue euf eur eut faa fac fae faf far fat fau fca fcc fce fcf fcr fct fcu fea fec fee fef fer fet feu ffa ffc ffe fff ffr fft ffu fra frc fre frf frr frt fru fta ftc fte ftf ftr ftt ftu fua fue fuf fur fut fuu ra- raa rac rae raf rar rat rau rca rcc rce rcf rcr rct rcu re- rea rec ree ref rer ret reu rfa rfc rfe rff rfr rft rfu rra rrc rrf rrr rrt rru rta rtc rte rtf rtr rtt rtu rua ruc rue ruf rur rut ruu taa tac tae taf tar tat tau tca tcc tce tcf tcr tct tcu te- tea tec tee tef ter tet teu tfa tfc tfe tff tfr tft tfu tra trc tre trf trr trt tru tta ttc tte ttf ttr ttt ttu tua tuc tue tuf tur tut tuu ua- uaa uac uae uaf uar uat uau uca ucc uce ucf ucr uct ucu uea uec uee uef uer uet ufa ufc ufe uff ufr uft ufu ur- ura urc ure urf urr urt uru uta utc ute utf utr utt utu uua uuc uue uur uut uuu