-er bbb bbe bbi bbk bbo bbr bbs be- beb bee bei bek beo ber bes bez bi- bib bie bii bik bio bir bis biz bkb bke bkk bko bkr bks bob boe boi bok boo bor bos boz brb bre bri brk bro brr brs brz bsb bse bsi bsk bso bsr bss bze bzo bzr bzs bzz ebb ebe ebi ebk ebo ebr ebs eeb eee eek eeo eer ees eib eie eii eik eio eir eis ekb eke eki eko ekr eks eo- eob eoe eoi eok eoo eor eos erb ere eri erk ero err ers erz es- esb ese esi esk eso esr ess eze ezo ezr ezs ezz ibb ibe ibi ibk ibo ibr ibs ibz ie- iee iei iek ier ies iib iie iii iio iir iis ikb ike iki ikk iko ikr iks io- iob ioe ioi ioo ior ios ir- irb ire iri irk iro irr irs is- isb ise isi isk iso isr iss ize izi izo izz k-z kbb kbe kbi kbk kbo kbr kbs kbz ke- keb kee kei kek keo ker kes kez kib kie kii kik kio kir kis kiz kkb kke kki kkk kkr kks kob koe koi kok koo kor kos koz kri krk kro krr krs ksb kse ksi ksk kso ksr kss kzo o-i ob- obb obe obi obk obo obr obs oeb oee oei oeo oer oes oib oie oii oik oio oir ois oiz okb oke oki okk oko okr oks oo- oob ooi ook ooo oor oos or- orb ore ori ork oro orr ors orz os- osb ose osi osk oso osr oss oze ozo ozs ozz rbb rbe rbi rbk rbo rbr rbs re- reb ree rei rek reo rer res rez rib rie rii rik rio rir ris riz rkb rke rkk rko rks rkz rob roe roi rok roo ror ros roz rrb rri rrk rrr rrs rsb rse rsi rsk rso rsr rss rzb rze rzo sbb sbe sbi sbk sbo sbr sbs se- seb see sei sek seo ser ses sez sib sie sii sik sio sir sis sk- skb ske ski skk sko skr sks sob soe soi sok soo sor sos soz sr- srb sre sri srk sro srr srs ss- ssb sse ssi ssk sso ssr sss ssz sze szi szr zbb zbr zbs zeb zee zek zeo zer zes zez zib zie zik zio zir zis ziz zks zo- zob zoe zoi zok zoo zor zos zro zrs zse zsi zsz zzr zzs zzz

-ose bbbb bbbs bbeb bebb bebe bebi bebo beeb beek beer bees beik beir beis beke beki beko beks beo- beok beor beos bere beri berk bero berr bers bes- bese besk beso bess beze bezi bibb bibe bibi bibo bibs bieb bier bies biis bike biko bio- bioi bios birb bire biri birk biro birr birs bis- bise bisk biso biss bize bizz bobb bobe bobi bobo bobs boee boeo boer boes boi- boie boii bois boke boki boko boks boob booe book boor boos booz bor- bore bori bork boro borr bors borz bose bosi bosk boso boss bozi bozo breb bree brei brek breo brer bres brez brie brik brio bris briz brkb brob broe brok broo bror bros broz brrr brrs brsb brsr bseb bsee bser bses bsos bsse bzer bzie bzoe bzrk bzzz ebbo ebbr ebbs eber ebes ebis eboe eboo ebor ebos ebro eeee eees eeke eeks eero eers eese eesi eesk eeze eiei eier eies eike eiki eiko eiks eire eirs eise eisk eiso eiss eizo ekeb ekek eker ekes ekis ekki ekoi ekos eksi eoes eoir eois eore eori erbb erbe ereb erei erer eres erez erie erik erio eris eriz erke erki erks erob eroe eroi eroo eros erre erro errs erse ersi erso erzi esbo esbs esee esek eseo eser eses esie esik esis eske esko esks eso- esok esos esri esse essi esso ezek ezer ezio ezri ezzo i-be ibes ibie ibis ibos ibri ibro ibss ieie ieio iere ieri iers iesi ieso iesr iies iiie iiii iiio iiis iioi iioo iios iirs iisi iisr ikee iker ikes ikki ikko ikoo ikri iobi ioee ioii ioio ioke ioko iooi iooo ioos iore iori iors ioso irbe iree irer ires iri- irie irio iris irki irks irob irre irri irrs irse isbe iseb isee iseo iser ises isie isis isko iso- isok isor isos isri isse issi isso issr isss izes izki izso izze izzo k-os kbbb kbbe kbbi kbbk kbbo kbbr kbbs kbbz kbeb kbee kbek kbeo kber kbes kbez kbib kbie kbik kbio kbis kbiz kbkb kbkk kbko kbkr kbkz kbob kboe kboi kbok kboo kbos kboz kbrb kbre kbri kbrk kbro kbrz kbsb kbsi kbsk kbso kbsr kbss kbsz kbze kbzi kbzo kbzs kbzz kebb kebe kebi kebr keek keer kees keib keii keik keio keir keis kekb keke keki keko keks keok keos ker- kerb kere keri kerk kero kerr kers kerz kesb kesi kesk keso kesr kess kesz kezb keze kezi kezr kezz kibb kibe kibi kibo kibr kibs kibz kier kies kiez kiii kiik kiis kiki kikk kiko kikr kikz kioe kioi kiok kioo kioz kirb kiri kirk kiro kirr kirs kise kisi kisk kiso kisr kiss kizs kizz kkbb kkbe kkbi kkbo kkbr kkbs kkbz kkez kkik kkkk kkob kkoo kkor kkoz kkrb kkre kkrk kkro kkrr kkrs kkrz kkse kksi kksr kkss kkzz kobb kobe kobi kobk kobo kobr kobs koei koes koii koir kokb koke koki kokk koko kokr koks kokz koob kooi kook kooo koor koos kooz korb kore kori kork koro korr kors kos- kosb kose kosi koso kosr koss kosz kozb koze kozi kozk kozo kozr krbb krbe krbi krbk krbr krbz kreb kree krei krek kreo kres krez krib krik krio kris kriz krke krki krkk krko krkr krks krkz krob kroe kroi krok kroo kror kros kroz krrb krre krri krrk krro krrr krrs krrz krse krsk krsr krss krze