-er a-a a-b a-t aaa aab aae aaf aar aas aat aau ab- aba abb abe abf abr abs abt abu aea aeb aee aef aer aes aet aeu af- afa afb afe aff afr afs aft afu ar- ara arb are arf arr ars art aru as- asa asb ase asf asr ass ast asu at- ata atb ate atf atr ats att atu au- aua aub aue auf aur aus aut b-u baa bab bae baf bar bas bat bau bba bbb bbe bbf bbr bbs bbt bbu be- bea beb bee bef ber bes bet beu bfa bfb bfe bff bfr bfs bft bfu bra brb bre brf brr brs brt bru bsa bsb bse bsf bsr bss bst bsu bta btb bte btf btr bts btt btu bua bub bue buf bur bus but buu eaa eab eae eaf ear eas eat eau eba ebb ebe ebf ebr ebs ebt ebu eea eeb eee eef eer ees eet ef- efa efb efe eff efr efs eft era erb ere erf err ers ert eru es- esa esb ese esf esr ess est esu eta etb ete etf etr ets ett etu eu- eua eub eue euf eur eus eut faa fab fae faf far fas fat fau fba fbb fbe fbf fbr fbs fbt fbu fea feb fee fef fer fes fet feu ffa ffe fff ffr ffs fft ffu fra frb fre frf frr frs frt fru fsa fsb fse fsf fsr fss fst fsu fta ftb fte ftf ftr fts ftt ftu fua fub fue fuf fur fus fut fuu ra- raa rab rae raf rar ras rat rau rba rbb rbe rbf rbr rbs rbt rbu re- rea reb ree ref rer res ret reu rfa rfb rfe rff rfr rfs rft rfu rra rrb rrf rrr rrs rrt rru rsa rsb rse rsf rsr rss rst rsu rta rtb rte rtf rtr rts rtt rtu rua rub rue ruf rur rus rut ruu saa sab sae saf sar sas sat sau sba sbb sbe sbf sbr sbs sbt sbu se- sea seb see sef ser ses set seu sfa sfb sfe sff sfr sfs sft sfu sr- sra srb sre srf srr srs srt ss- ssa ssb sse ssf ssr sss sst ssu sta stb ste stf str sts stt stu sua sub sue suf sur sus sut suu taa tab tae taf tar tas tat tau tba tbb tbe tbf tbr tbs tbt tbu te- tea teb tee tef ter tes tet teu tfa tfb tfe tff tfr tfs tft tfu tra trb tre trf trr trs trt tru tsa tsb tse tsf tsr tss tst tsu tta ttb tte ttf ttr tts ttt ttu tua tub tue tuf tur tus tut tuu ua- uaa uab uae uaf uar uas uat uau uba ubb ube ubf ubr ubs ubt ubu uea ueb uee uef uer ues uet ufa ufe uff ufr ufs uft ufu ur- ura urb ure urf urr urs urt uru usa usb use usf usr uss ust usu uta utb ute utf utr uts utt utu uua uue uur uus uut uuu

-ase a-be a-fu aaaa aaab aaae aaaf aaar aaas aaba aabb aabt aaea aaes aafa aafb aaff aara aare aars aart aaru aasa aase aasf aass aast aasu aata aatf aatt aaus abaa abab abae abaf abar abas abat abau abb- abba abbb abbe abbr abbs abbt abee aber abes abet abff abra abrs abs- absa abse absf abss absu abta abts abtu abua abue abuf abus abut aeaf aeas aebs aeer aer- aera aers aess aest aeta aetf aetr aett afaa afar afat afbs afee afer afes afet affa affs afft afr- afra afre afrs afru afsa afsb afst afta afte afts afua afue afus arab arae araf arar aras arat arau arba arbe arbs area aree aref ares aret areu arfa arfb arff arfs arft arfu arr- arra arre arrr arrs arrt arru ars- arsa arse arst arsu arta arte artr arts arua arub arue arut asaa asab asae asaf asar asas asat asau asba asbu asea asee aser ases aset asfa asra asrs asru assa asse assr asss asst assu asta astb aste astr asts asub asue asur asus at-t ataa atab atae atar atas atat atbs atea atee atef ater ates atfb atfe atfs atra atre atru atsb atse atst atta atte attr atts attu atua atub atur atus auaa aube auer aufe aufs aur- aura aure ausa ause aust ausu aut- aute auts baaa baaf baar baas baat baba babb babe babr babs babu baer baes baff baft bar- bara barb bare barf barr bars bart baru basa base basf bass bast basu bata bate batf bats batt batu bau- bauf baur bbas bbau bbbb bbbs bbeb bbet beaf bear beas beat beau beba bebb bebe beeb beef beer bees beet befa befe beff beft bera bere berr bers bert beru bes- besa bese bess best beta bete bets bett betu beur bfas bffs bfsr bfta bfts bftt brab brae braf bras brat brau brea breb bree bref brer bres bret brfu brrr brrs brsb brsr brst brue brus brut bsaa bsas bsat bsea bseb bsee bser bses bset bsfa bsff bsfs bsra bsse bsts btaa btaf btrt btss bttb btus buar buat buba bubb bube bubs bubu buea buer bueu bufe buff bufr bur- bura burb bure burr burs burt buru busa buse buss bust busu but- buta bute buts butt buus eaaf eaba eafb eara earb eare ears eart easa ease east eata eate eats eaus ebba ebbr ebbs eber ebes ebru ebsa ebur ebus eeea eeee eees eefa eefe eera eers eese eeta eete eets eetu efab efas efbr efes efet effa effs efsa eft- efta efts eftu efua eraf eras erat erau erba erbb erbe ereb erer eres eret erfs erft erra erre errs ersa erse erst erta erts ertu erua erub erur erus esab esar esas esat esau esba esbs esea esee eser eses eset esfs