-er a-a a-b aaa aab aae aak aam aar aas aau ab- aba abb abe abk abm abr abs abu aea aeb aee aek aem aer aes aeu aka akb ake akk akm akr aks aku ama amb ame amk amm amr ams amu ar- ara arb are ark arm arr ars aru as- asa asb ase ask asm asr ass asu au- aua aub aue auk aum aur aus b-u baa bab bae bak bam bar bas bau bba bbb bbe bbk bbm bbr bbs bbu be- bea beb bee bek bem ber bes beu bka bkb bke bkk bkm bkr bks bma bmb bme bmk bmm bmr bms bmu bra brb bre brk brm brr brs bru bsa bsb bse bsk bsm bsr bss bsu bua bub bue buk bum bur bus buu eaa eab eae eak eam ear eas eau eba ebb ebe ebk ebm ebr ebs ebu eea eeb eee eek eem eer ees eka ekb eke ekr eks eku em- ema emb eme emk emm emr ems emu era erb ere erk erm err ers eru es- esa esb ese esk esm esr ess esu eu- eua eub eue eur eus ka- kaa kab kae kak kam kar kas kau kba kbb kbe kbk kbm kbr kbs kbu ke- kea keb kee kek kem ker kes kkb kke kkk kkm kkr kks kku kma kmb kme kmk kmm kms kmu kra krk krr krs kru ksa ksb kse ksk ksm ksr kss ksu kub kue kuk kum kur kus kuu m-r maa mab mae mak mam mar mas mau mba mbb mbe mbk mbm mbr mbs mbu mea meb mee mek mem mer mes meu mka mkb mke mkk mkm mkr mks mku mma mmb mme mmk mmm mmr mms mmu mra mrb mre mrk mrm mrr mrs mru msa msb mse msk msm msr mss msu mua mub mue muk mum mur mus muu ra- raa rab rae rak ram rar ras rau rba rbb rbe rbk rbm rbr rbs rbu re- rea reb ree rek rem rer res reu rkb rke rkk rkm rks rku rma rmb rme rmm rmr rms rra rrb rrk rrm rrr rrs rru rsa rsb rse rsk rsm rsr rss rsu rua rub rue ruk rum rur rus ruu saa sab sae sak sam sar sas sau sba sbb sbe sbk sbm sbr sbs sbu se- sea seb see sek sem ser ses seu sk- ska skb ske skk skm skr sks sku sma smb sme smk smm smr sms smu sr- sra srb sre srk srm srr srs ss- ssa ssb sse ssk ssm ssr sss ssu sua sub sue suk sum sur sus suu ua- uaa uab uae uak uam uar uas uau uba ubb ube ubk ubr ubs ubu uea ueb uee uem uer ues uka ukb uke ukk ukr uku um- uma umb ume umm umr ums umu ur- ura urb ure urk urm urr urs uru usa usb use usk usm usr uss usu uua uue uum uur uus uuu

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