-er a-a a-b a-t aaa aab aae aak aar aas aat aau ab- aba abb abe abk abr abs abt abu aea aeb aee aek aer aes aet aeu aka akb ake akk akr aks aku ar- ara arb are ark arr ars art aru as- asa asb ase ask asr ass ast asu at- ata atb ate atr ats att atu au- aua aub aue auk aur aus aut b-u baa bab bae bak bar bas bat bau bba bbb bbe bbk bbr bbs bbt bbu be- bea beb bee bek ber bes bet beu bka bkb bke bkk bkr bks bkt bra brb bre brk brr brs brt bru bsa bsb bse bsk bsr bss bst bsu bta btb bte btk btr bts btt btu bua bub bue buk bur bus but buu eaa eab eae eak ear eas eat eau eba ebb ebe ebk ebr ebs ebt ebu eea eeb eee eek eer ees eet eka ekb eke ekr eks ekt eku era erb ere erk err ers ert eru es- esa esb ese esk esr ess est esu eta etb ete etk etr ets ett etu eu- eua eub eue eur eus eut k-t ka- kaa kab kae kak kar kas kat kau kba kbb kbe kbk kbr kbs kbu ke- kea keb kee kek ker kes ket kkb kke kkk kkr kks kkt kku kra krk krr krs krt kru ksa ksb kse ksk ksr kss kst ksu kta ktb kte ktk ktr kts ktt ktu kub kue kuk kur kus kut kuu ra- raa rab rae rak rar ras rat rau rba rbb rbe rbk rbr rbs rbt rbu re- rea reb ree rek rer res ret reu rkb rke rkk rks rkt rku rra rrb rrk rrr rrs rrt rru rsa rsb rse rsk rsr rss rst rsu rta rtb rte rtk rtr rts rtt rtu rua rub rue ruk rur rus rut ruu saa sab sae sak sar sas sat sau sba sbb sbe sbk sbr sbs sbt sbu se- sea seb see sek ser ses set seu sk- ska skb ske skk skr sks skt sku sr- sra srb sre srk srr srs srt ss- ssa ssb sse ssk ssr sss sst ssu sta stb ste stk str sts stt stu sua sub sue suk sur sus sut suu taa tab tae tak tar tas tat tau tba tbb tbe tbk tbr tbs tbt tbu te- tea teb tee tek ter tes tet teu tka tkb tke tkk tkr tks tkt tra trb tre trk trr trs trt tru tsa tsb tse tsk tsr tss tst tsu tta ttb tte ttk ttr tts ttt ttu tua tub tue tuk tur tus tut tuu ua- uaa uab uae uak uar uas uat uau uba ubb ube ubk ubr ubs ubt ubu uea ueb uee uer ues uet uka ukb uke ukk ukr uku ur- ura urb ure urk urr urs urt uru usa usb use usk usr uss ust usu uta utb ute utk utr uts utt utu uua uue uur uus uut uuu

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