-er bbb bbe bbi bbk bbr bbs be- beb bee bei bek ber bes bi- bib bie bii bik bir bis bkb bke bkk bkr bks brb bre bri brk brr brs bsb bse bsi bsk bsr bss ebb ebe ebi ebk ebr ebs eeb eee eek eer ees eib eie eii eik eir eis ekb eke eki ekr eks erb ere eri erk err ers es- esb ese esi esk esr ess ibb ibe ibi ibk ibr ibs ie- iee iei iek ier ies iib iie iii iir iis ikb ike iki ikk ikr iks ir- irb ire iri irk irr irs is- isb ise isi isk isr iss kbb kbe kbi kbk kbr kbs ke- keb kee kei kek ker kes kib kie kii kik kir kis kkb kke kki kkk kkr kks kri krk krr krs ksb kse ksi ksk ksr kss rbb rbe rbi rbk rbr rbs re- reb ree rei rek rer res rib rie rii rik rir ris rkb rke rkk rks rrb rri rrk rrr rrs rsb rse rsi rsk rsr rss sbb sbe sbi sbk sbr sbs se- seb see sei sek ser ses sib sie sii sik sir sis sk- skb ske ski skk skr sks sr- srb sre sri srk srr srs ss- ssb sse ssi ssk ssr sss

bbbb bbbs bbeb bebb bebe bebi beeb beek beer bees beik beir beis beke beki beks bere beri berk berr bers bes- bese besk bess bibb bibe bibi bibs bieb bier bies biis bike birb bire biri birk birr birs bis- bise bisk biss breb bree brei brek brer bres brie brik bris brkb brrr brrs brsb brsr bseb bsee bser bses bsse ebbr ebbs eber ebes ebis eeee eees eeke eeks eers eese eesi eesk eiei eier eies eike eiki eiks eire eirs eise eisk eiss ekeb ekek eker ekes ekis ekki eksi erbb erbe ereb erei erer eres erie erik eris erke erki erks erre errs erse ersi esbs esee esek eser eses esie esik esis eske esks esri esse essi i-be ibes ibie ibis ibri ibss ieie iere ieri iers iesi iesr iies iiie iiii iiis iirs iisi iisr ikee iker ikes ikki ikri irbe iree irer ires iri- irie iris irki irks irre irri irrs irse isbe iseb isee iser ises isie isis isri isse issi issr isss kbbb kbbe kbbi kbbk kbbr kbbs kbeb kbee kbek kber kbes kbib kbie kbik kbis kbkb kbkk kbkr kbrb kbre kbri kbrk kbsb kbsi kbsk kbsr kbss kebb kebe kebi kebr keek keer kees keib keii keik keir keis kekb keke keki keks ker- kerb kere keri kerk kerr kers kesb kesi kesk kesr kess kibb kibe kibi kibr kibs kier kies kiii kiik kiis kiki kikk kikr kirb kiri kirk kirr kirs kise kisi kisk kisr kiss kkbb kkbe kkbi kkbr kkbs kkik kkkk kkrb kkre kkrk kkrr kkrs kkse kksi kksr kkss krbb krbe krbi krbk krbr kreb kree krei krek kres krib krik kris krke krki krkk krkr krks krrb krre krri krrk krrr krrs krse krsk krsr krss ksbi ksbr ksbs ksee ksei ksek kser ksib ksii ksik ksir ksis kskb kske kskk kskr ksks ksrb ksrr ksrs ksse kssi kssr ksss rbbb rbbr rbbs rbis rbss rebb rebe rebk rebs reeb reek rees reii reik reir reis reke reki reks rere reri rers rese resi ress rib- ribe ribs riek rier ries riis rike riki rikk rire riri rirs rise risi risk riss rkss rrrr rsbi rsee rsis rsre s-ib s-ii sbbs sber sbrk sbse sbsi se-e se-i se-k se-s sebe sebi sebs seeb seek seer sees seie seii seik seir seis seke seki sekk serb sere seri serk serr sers sese sesi sess sibe sibi sibs siek sier sies siik sike siki sikr siks sire siri sirk sirr sirs sise sisi sisk siss skee skei sker skes skie skik skir skis skss sreb sres srib sris ssbr ssee sses ssis ssri ssrs sssb sssi ssss

b-r-k bbbee bbser be-er bebek beber bebes beebe beebs beeke beeri beers beibi beier beire beirs beker bekes bekir bekke berbe berei berek beres berie beris berk- berke berks berre berri berse besee besie besri besse bessi bibbe bibbs biber bibes bibie bibis bibri biebe biebs bieke biere bieri biers biisk biker bikes bikie birie birks birrs birse birsk bisee bisei biser bises bisie bisks bisse breek breer brees breik breke brere brers brese bress bribe brier bries brike brisb brise brisi brisk briss brrrr e-sir ebber ebbie ebers ebibe ebike eeeee eerie eerik eiker eires eirie eiseb eisie ekbir ekers ekker erbbe erber erebs ereis erere eresi eresk erier eries eriks erkki erres erris erses esbri esere esiee esiri esker esser esses essie essse ibrik ieiri ierei iiiee iiiii iikss iiris iisir ikbke ikire ikiss iksir irbis iress iriki iris- irise iriss irker irsee irssi is-is iseek iseki isisi isker iskre isrib issei isser issie issre kebbe kebek keber kebir keeks keere keeri keiki keire keiri keirs keiss kekri kerbs kerei kerek keres kerie kerik keris kerre kerri kerrs kerse kerss keser kesis kesri kesse kibbe kibbi kibei kibes kibi- kieke kiers kiess kiiki kikes kikis kikki kires kirie kiris kirke kirki kirks kirre kirsi kisei kisek kiser kisii kisir kiske kiss- kissi krebs kreek krees kreis kreke kreki kresk kress kribi kriek krier kries krike kriss rebbe reber rebis reeks reere reese reesk reiek reike reiki reiks reise reiss rekke rere- reree reres rerik rerir resee reses reske reski resse ribbi riber ribes ribie riers riese riesi riess riise rikei riker rikki rires ririe risee riser rises risks risse s-iii sebbe sebei sebek sebes sebi- sebis sebri sebsi see-i seebe seebi seeis seeke seeks seere seers seese seibi seiki seire seirs seise seiss sekei seker sekes sekir sekke serbi serbs serer seres serie serik serir seris serke serre serri serse sersi serss seser seses sesis sesse sibbe sibir siebe sieie sieke siese siker sikes sikke sikki sikre sikri siree sires sirik siris sirki sirse sirsi siser