-er a-a a-c a-t aaa aac aae aaf aak aar aat aau ac- aca acc ace acf ack acr act acu aea aec aee aef aek aer aet aeu af- afa afc afe aff afk afr aft afu aka akc ake akk akr aku ar- ara arc are arf ark arr art aru at- ata atc ate atf atr att atu au- aua auc aue auf auk aur aut c-- caa cac cae caf cak car cat cau cca ccc cce ccf cck ccr cct ccu ce- cea cec cee cef cek cer cet ceu cfa cfc cfe cff cfk cfr cft cfu cka ckc ckt cra crc cre crf crk crr crt cru cta ctc cte ctf ctk ctr ctt ctu cua cuc cue cuf cuk cur cut cuu eaa eac eae eaf eak ear eat eau ec- eca ecc ece ecf eck ecr ect ecu eea eec eee eef eek eer eet ef- efa efc efe eff efr eft eka ekc eke ekf ekr ekt eku era erc ere erf erk err ert eru eta etc ete etf etk etr ett etu eu- eua euc eue euf eur eut faa fac fae faf fak far fat fau fca fcc fce fcf fck fcr fct fcu fea fec fee fef fek fer fet feu ffa ffc ffe fff ffk ffr fft ffu fka fkc fkf fkk fkt fra frc fre frf frk frr frt fru fta ftc fte ftf ftk ftr ftt ftu fua fue fuf fuk fur fut fuu k-t ka- kaa kac kae kaf kak kar kat kau kca kcc kce kck kcr kct kcu ke- kea kec kee kef kek ker ket kfa kfc kff kfu kkc kke kkk kkr kkt kku kra krc krf krk krr krt kru kta ktc kte ktf ktk ktr ktt ktu kuc kue kuk kur kut kuu ra- raa rac rae raf rak rar rat rau rca rcc rce rcf rcr rct rcu re- rea rec ree ref rek rer ret reu rfa rfc rfe rff rfk rfr rft rfu rkc rke rkf rkk rkt rku rra rrc rrf rrk rrr rrt rru rta rtc rte rtf rtk rtr rtt rtu rua ruc rue ruf ruk rur rut ruu taa tac tae taf tak tar tat tau tca tcc tce tcf tck tcr tct tcu te- tea tec tee tef tek ter tet teu tfa tfc tfe tff tfk tfr tft tfu tka tkc tke tkk tkr tkt tra trc tre trf trk trr trt tru tta ttc tte ttf ttk ttr ttt ttu tua tuc tue tuf tuk tur tut tuu ua- uaa uac uae uaf uak uar uat uau uca ucc uce ucf uck ucr uct ucu uea uec uee uef uer uet ufa ufc ufe uff ufr uft ufu uka ukc uke ukf ukk ukr uku ur- ura urc ure urf urk urr urt uru uta utc ute utf utk utr utt utu uua uuc uue uur uut uuu