-er bbb bbe bbi bbk bbl bbr bbs be- beb bee bei bek bel ber bes bi- bib bie bii bik bil bir bis bkb bke bkk bkl bkr bks blb ble bli blk bll blr bls brb bre bri brk brl brr brs bsb bse bsi bsk bsl bsr bss ebb ebe ebi ebk ebl ebr ebs eeb eee eek eel eer ees eib eie eii eik eil eir eis ekb eke eki ekl ekr eks elb ele eli elk ell elr els erb ere eri erk erl err ers es- esb ese esi esk esl esr ess ibb ibe ibi ibk ibl ibr ibs ie- iee iei iek iel ier ies iib iie iii iil iir iis ikb ike iki ikk ikl ikr iks il- ilb ile ili ilk ill ilr ils ir- irb ire iri irk irl irr irs is- isb ise isi isk isl isr iss kbb kbe kbi kbk kbl kbr kbs ke- keb kee kei kek kel ker kes kib kie kii kik kil kir kis kkb kke kki kkk kkl kkr kks kl- klb kli klr kls kri krk krl krr krs ksb kse ksi ksk ksl ksr kss lbb lbe lbi lbk lbl lbr lbs leb lee lei lek lel ler les lib lie lii lik lil lir lis lkb lkl lkr lks llb lle lli llk lll llr lls lrb lri lrk lrr lrs lsb lse lsi lsk lsl lsr lss rbb rbe rbi rbk rbl rbr rbs re- reb ree rei rek rel rer res rib rie rii rik ril rir ris rkb rke rkk rks rle rli rll rlr rls rrb rri rrk rrl rrr rrs rsb rse rsi rsk rsl rsr rss sbb sbe sbi sbk sbl sbr sbs se- seb see sei sek sel ser ses sib sie sii sik sil sir sis sk- skb ske ski skk skl skr sks slb sle sli slk sll slr sls sr- srb sre sri srk srl srr srs ss- ssb sse ssi ssk ssl ssr sss

bbbb bbbs bbeb bblb bbls bebb bebe bebi beeb beek beel beer bees beik beil beir beis beke beki beks bele beli belk bell bels bere beri berk berr bers bes- bese besk bess bibb bibe bibi bibl bibs bieb biel bier bies biis bike bile bili bilk bill bils birb bire biri birk birl birr birs bis- bise bisk bisl biss bleb blee blei blek bles blik blir blis blkb blls blss breb bree brei brek brel brer bres brie brik bril bris brkb brls brrr brrs brsb brsr bseb bsee bser bses bsse ebbr ebbs ebel eber ebes ebis ebli eeee eees eeke eeks eele eels eers eese eesi eesk eiei eier eies eike eiki eiks eile eire eirs eise eisk eiss ekeb ekek eker ekes ekis ekki eksi el-b elbe elbi elee elek eler eles elie elik elil elis elke elki elks elle elli ells else erbb erbe ereb erei erel erer eres erie erik eril eris erke erki erks erle erli erll erre errs erse ersi esbs esee esek esel eser eses esie esik esil esis eske esks esli esri esse essi essl i-be ibes ibie ibis ible ibri ibss ieie iele iels iere ieri iers iesi iesr iies iiie iiii iiis iirs iisi iisr ikee iker ikes ikki ikri ile- ilek iler iles ilie ilir ilis ilke ilki ilks ill- ille illi ills ilre ilse irbe iree irel irer ires iri- irie iril iris irki irks irlb irre irri irrs irse isbe isbl iseb isee isel iser ises isie isil isis isle isls isri isse issi issr isss kbbb kbbe kbbi kbbk kbbl kbbr kbbs kbeb kbee kbek kbel kber kbes kbib kbie kbik kbil kbis kbkb kbkk kbkl kbkr kblb kble kbll kblr kbls kbrb kbre kbri kbrk kbrl kbsb kbsi kbsk kbsr kbss kebb kebe kebi kebr keek keel keer kees keib keii keik keil keir keis kekb keke keki kekl keks kele keli kelk kell ker- kerb kere keri kerk kerl kerr kers kesb kesi kesk kesr kess kibb kibe kibi kibl kibr kibs kiel kier kies kiii kiik kiis kiki kikk kikr kilb kile kili kilk kill kilr kirb kiri kirk kirr kirs kise kisi kisk kisl kisr kiss kkbb kkbe kkbi kkbl kkbr kkbs kkik kkkk kklb kkli kkll kkls kkrb kkre kkrk kkrl kkrr kkrs kkse kksi kksr kkss klbb klbe klbl klbs kleb klee klek kler kles klib klik klil klir klis klkk klkl klkr klks kllb klle kllk klls klrk klrr klrs klse klsi klsr krbb krbe krbi krbk krbl krbr kreb kree krei krek kres krib krik kril kris krke krki krkk krkr krks krle krrb krre krri krrk krrl krrr krrs krse krsk krsl krsr krss ksbi ksbl ksbr ksbs ksee ksei ksek ksel kser ksib ksii ksik ksil ksir ksis kskb kske kskk kskr ksks kslb ksle ksli kslk ksll kslr ksrb ksrr ksrs ksse kssi kssl kssr ksss lblr lbrs leek leel leer lees leib leie leik leil leir leis leke leki lekk leks lele leli lell lere lerk lese lesk less libe libr libs lieb liek liel lier lies liii liir liis like lilb lile lili lill lils lire liri lirk lirl lirr lirs lise lisi lisk liss lkrs llbs lles llks llll lrrr lrse ls-r lses lssr rbbb rbbr rbbs rbis rble rbsl rbss rebb rebe rebk rebs reeb reek reel rees reii reik reil reir reis reke reki reks relb rele rell rels rere reri rers rese resi ress rib- ribe ribs riek riel rier ries riis rike riki rikk rile rill rire riri rirs rise risi risk riss rkss rlee rlls rrle rrrr rsbi rsee rsis rsre rssl s-ib s-ii sbbs sber sbrk sbse sbsi se-e se-i se-k se-s sebe sebi sebs seeb seek seel seer sees seie seii seik seil seir seis seke seki sekk selb sele seli selk sell sels serb sere seri serk serr sers sese sesi sess sibe sibi sibs siek siel sier sies siik sike siki sikr