-er b-p bbb bbe bbf bbi bbk bbo bbp bbr be- beb bee bef bei bek beo bep ber bfb bfe bff bfi bfo bfp bfr bi- bib bie bif bii bik bio bip bir bkb bke bkf bkk bko bkp bkr bob boe bof boi bok boo bop bor bpb bpe bpf bpi bpo bpp bpr brb bre brf bri brk bro brp brr ebb ebe ebf ebi ebk ebo ebp ebr eeb eee eef eek eeo eep eer ef- efb efe eff efi efo efp efr eib eie eif eii eik eio eip eir ekb eke ekf eki eko ekp ekr eo- eob eoe eof eoi eok eoo eop eor ep- epb epe epf epi epo epp epr erb ere erf eri erk ero erp err fbb fbe fbf fbi fbk fbo fbp fbr feb fee fef fei fek feo fep fer ffe fff ffi ffk ffo ffp ffr fib fie fif fii fik fip fir fkb fkf fki fkk fkp fob foe fof foi fok foo fop for fpb fpe fpi fpk fpo fpp fpr frb fre frf fri frk fro frp frr i-f ibb ibe ibf ibi ibk ibo ibp ibr ie- iee ief iei iek iep ier ifb ife iff ifi ifo ifp ifr iib iie iif iii iio iip iir ikb ike ikf iki ikk iko ikr io- iob ioe iof ioi ioo iop ior ipb ipe ipf ipi ipo ipp ipr ir- irb ire irf iri irk iro irp irr kbb kbe kbf kbi kbk kbo kbp kbr ke- keb kee kef kei kek keo kep ker kff kfi kfo kib kie kif kii kik kio kip kir kkb kke kki kkk kkp kkr kob koe kof koi kok koo kop kor kpe kpf kpi kpk kpo kpp kpr krf kri krk kro krp krr o-i ob- obb obe obf obi obk obo obp obr oeb oee oef oei oeo oep oer of- ofb ofe off ofi ofo ofp ofr oib oie oif oii oik oio oip oir okb oke oki okk oko okp okr oo- oob oof ooi ook ooo oop oor op- opb ope opf opi opk opo opp opr or- orb ore orf ori ork oro orp orr p-p pbb pbe pbf pbi pbk pbo pbp pbr peb pee pef pei pek peo pep per pfb pfe pff pfi pfk pfo pfp pfr pib pie pif pii pik pio pip pir pkb pke pkf pki pko pkp pkr pob poe pof poi pok poo pop por ppb ppe ppf ppi ppk ppo ppp ppr prb pre prf pri prk pro prp prr rbb rbe rbf rbi rbk rbo rbp rbr re- reb ree ref rei rek reo rep rer rfb rfe rff rfi rfk rfo rfp rfr rib rie rif rii rik rio rip rir rkb rke rkf rkk rko rkp rob roe rof roi rok roo rop ror rpb rpe rpf rpi rpk rpo rpp rpr rrb rrf rri rrk rrp rrr

bbbb bbeb bbpr bebb bebe bebi bebo beeb beef beek beep beer befe beff befo beik beir beke beki beko beo- beof beok beor bepo bere beri berk bero berr bfpo bfpp bibb bibe bibi bibo bieb bief bier biff bifi bike biko bio- bioi bipp birb bire biri birk biro birr bkpr bobb bobe bobi bobo boee boef boeo boep boer bofe boff boi- boie boii boke boki boko boob booe boof book boop boor bope bopp bor- bore borf bori bork boro borr bpoe breb bree bref brei brek breo brep brer brie brik brio brkb brob broe brok broo bror brrr ebbo ebbr eber eboe eboo ebor ebpo ebro eeee eefe eeke eero efbr efeo effi efik efke efor eiei eier eike eiki eiko eipo eipr eire ekeb ekek eker ekki ekoi ekpe ekpo eoir eore eori epee eper epi- epie epik epip epor eppo eppp eprb epro eprp erbb erbe ereb erei erer erie erik erio erke erki erob eroe eroi eroo erpe erre erro f--k fbop febo feeb feek feer fefe feff fefi fefo feie feio feir feke feko feof ferb fere ferk fero ferr ffee ffff ffii ffrr fibe fibp fief fier fife fiff fifi fifo fiii fike fiki fioe fior fipp fire firk fkbp foer fofo foie foke foki foof fook fopp for- forb fore fori fork foro forr fprf free frei freo frep frib frie frik frio frip frob froe frop i-be ibfi ibie ibri ibro ieie ieio iere ieri ifbb ifer ifor ifpo ifrb ifrf ifri iiie iiii iiio iioi iioo iiop iipf ikee iker ikki ikko ikoo ikri iobi ioee ioii ioio ioke ioko ioof iooi iooo iore iori ipbk ipek iper ipie ipkf ipko ipoe ipop ippf ippo ippr ipri irbe irbp iree irer irfe iri- irie irio irip irki irob irop irpe irre irri kbbb kbbe kbbf kbbi kbbk kbbo kbbr kbeb kbee kbef kbek kbeo kber kbfb kbff kbfi kbfk kbfo kbfp kbfr kbib kbie kbif kbik kbio kbkb kbkf kbkk kbko kbkr kbob kboe kboi kbok kboo kbpe kbpi kbpk kbpo kbpr kbrb kbre kbrf kbri kbrk kbro kebb kebe kebi kebr keef keek keep keer kefb keff kefr keib keif keii keik keio keir kekb keke keki keko keok kep- kepe kepi ker- kerb kere kerf keri kerk kero kerp kerr kfbk kfeb kfer kffb kfff kffk kfio kfir kfkb kfok kfoo kfor kfpr kfre kfri kfro kfrp kfrr kibb kibe kibi kibo kibr kief kier kife kiff kifr kiii kiik kiip kikf kiki kikk kiko kikr kioe kioi kiok kioo kip- kipe kipi kipo kipp kipr kirb kirf kiri kirk kiro kirp kirr kkbb kkbe kkbi kkbo kkbr kkfi kkfr kkik kkkk kkob kkoo kkor kkpk kkrb kkre kkrf kkrk kkro kkrr kobb kobe kobi kobk kobo kobr koei kofe koff kofi kofk kofo kofp koii koir kokb koke kokf koki kokk koko kokp kokr koob kooi kook kooo koop koor kopb kope kopf kopi kopp kopr korb kore korf kori kork koro korr kpbb kpbe kpbi kpbr kpek kper kpfk