-er bbb bbe bbi bbk bbo bbr bbt be- beb bee bei bek beo ber bet bez bi- bib bie bii bik bio bir bit biz bkb bke bkk bko bkr bkt bob boe boi bok boo bor bot boz brb bre bri brk bro brr brt brz btb bte bti btk bto btr btt btz bze bzo bzr bzz ebb ebe ebi ebk ebo ebr ebt eeb eee eek eeo eer eet eib eie eii eik eio eir eit ekb eke eki eko ekr ekt eo- eob eoe eoi eok eoo eor eot erb ere eri erk ero err ert erz etb ete eti etk eto etr ett etz eze ezo ezr ezz ibb ibe ibi ibk ibo ibr ibt ibz ie- iee iei iek ier iet iib iie iii iio iir iit ikb ike iki ikk iko ikr ikt io- iob ioe ioi ioo ior iot ir- irb ire iri irk iro irr irt itb ite iti itk ito itt itz ize izi izo izz k-t k-z kbb kbe kbi kbk kbo kbr kbz ke- keb kee kei kek keo ker ket kez kib kie kii kik kio kir kit kiz kkb kke kki kkk kkr kkt kob koe koi kok koo kor kot koz kri krk kro krr krt ktb kte ktk kto ktr ktt kzo o-i ob- obb obe obi obk obo obr obt oeb oee oei oeo oer oet oib oie oii oik oio oir oit oiz okb oke oki okk oko okr oo- oob ooi ook ooo oor oot or- orb ore ori ork oro orr ort orz ot- otb ote oti otk oto otr ott otz oze ozo ozt ozz rbb rbe rbi rbk rbo rbr rbt re- reb ree rei rek reo rer ret rez rib rie rii rik rio rir rit riz rkb rke rkk rko rkt rkz rob roe roi rok roo ror rot roz rrb rri rrk rrr rrt rtb rte rti rtk rto rtr rtt rtz rzb rze rzo tbb tbe tbi tbk tbo tbr tbt tbz te- teb tee tei tek teo ter tet tez tib tie tii tik tio tir tit tiz tkb tke tkk tko tkr tkt tkz to- tob toe toi tok too tor tot toz trb tre tri trk tro trr trt trz ttb tte tti ttk tto ttr ttt tze zbb zbr zbt zeb zee zek zeo zer zet zez zib zie zik zio zir zit ziz zo- zob zoe zoi zok zoo zor zot zro zte ztr zzr zzt zzz

bbbb bbeb bbet bebb bebe bebi bebo beeb beek beer beet beik beir beit beke beki beko beo- beok beor beot bere beri berk bero berr bert bete beti beto bett betz beze bezi bibb bibe bibi bibo bieb bier biet bike biko bio- bioi biot birb bire biri birk biro birr birt bite bito bitt bitz bize bizz bobb bobe bobi bobo boee boeo boer boet boi- boie boii boit boke boki boko boob booe book boor boot booz bor- bore bori bork boro borr bort borz botb bote boti boto bott bozi bozo breb bree brei brek breo brer bret brez brie brik brio brit briz brkb brob broe brok broo bror brot broz brrr btek btie btob btor btrt bttb bzer bzie bzoe bzrk bzzt bzzz ebbo ebbr eber ebit eboe eboo ebor ebro eeee eeke eero eete eeze eiei eier eike eiki eiko eire eitb eiti eito eitr eizo ekeb ekek eker eket ekki ekoi eoir eore eori eoto erbb erbe ereb erei erer eret erez erie erik erio erit eriz erke erki erob eroe eroi eroo erre erro ertz erzi etbr etee eter etik etio etoe etok etre etro ette etti etto ezek ezer ezio ezri ezzo i-be ibet ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt ikee iker ikki ikko ikoo ikri iobi ioee ioii ioio ioit ioke ioko iooi iooo iore iori iote ioto irbe iree irer iri- irie irio irki irob irre irri irte irti itbe itek iter itet itie itko itoi itoo itor itri itto izet izki izze izzo kbbb kbbe kbbi kbbk kbbo kbbr kbbt kbbz kbeb kbee kbek kbeo kber kbet kbez kbib kbie kbik kbio kbit kbiz kbkb kbkk kbko kbkr kbkz kbob kboe kboi kbok kboo kbot kboz kbrb kbre kbri kbrk kbro kbrt kbrz kbtb kbte kbtk kbto kbtr kbtt kbtz kbze kbzi kbzo kbzt kbzz kebb kebe kebi kebr kebt keek keer keet keib keii keik keio keir kekb keke keki keko keok ker- kerb kere keri kerk kero kerr kert kerz ket- kete keti ketk keto ketr kett kezb keze kezi kezr kezz kibb kibe kibi kibo kibr kibt kibz kier kiez kiii kiik kiit kiki kikk kiko kikr kikt kikz kioe kioi kiok kioo kiot kioz kirb kiri kirk kiro kirr kirt kite kiti kito kitr kitt kitz kizz kkbb kkbe kkbi kkbo kkbr kkbt kkbz kkez kkik kkit kkkk kkob kkoo kkor kkot kkoz kkrb kkre kkrk kkro kkrr kkrt kkrz kktk kktz kkzz kobb kobe kobi kobk kobo kobr koei koii koir koit kokb koke koki kokk koko kokr kokz koob kooi kook kooo koor koot kooz korb kore kori kork koro korr kort kotb kote koti kotk koto kotr kott kotz kozb koze kozi kozk kozo kozr kozt krbb krbe krbi krbk krbr krbt krbz kreb kree krei krek kreo kret krez krib krik krio krit kriz krke krki krkk krko krkr krkz krob kroe kroi krok kroo kror kroz krrb krre krri krrk krro krrr krrt krrz krti krtk krto krtr krtz krze krzi krzk krzr krzz ktbb ktbr ktbt ktbz ktee ktek ktez ktib ktie ktik ktkb ktke ktkk ktko ktkr ktkt ktkz ktob ktoe ktok ktoo ktor ktot ktrb ktre ktri ktrk ktro ktrr ktrt ktrz ktti kttk ktto kttr kttt kttz ktzk ktzo ktzr ktzt ktzz kzbb kzbe kzbi kzbk kzbr kzbt kzbz kzee kzer kzio kziz kzke kzkr kzkz kzoi kzoo kzor kzot kzoz kzrb