-er b-p bbb bbe bbi bbo bbp bbr bbt be- beb bee bei beo bep ber bet bez bi- bib bie bii bio bip bir bit biz bob boe boi boo bop bor bot boz bpb bpe bpi bpo bpp bpr bpt brb bre bri bro brp brr brt brz btb bte bti bto btp btr btt btz bze bzo bzp bzr bzz ebb ebe ebi ebo ebp ebr ebt eeb eee eeo eep eer eet eib eie eii eio eip eir eit eo- eob eoe eoi eoo eop eor eot ep- epb epe epi epo epp epr ept epz erb ere eri ero erp err ert erz etb ete eti eto etp etr ett etz eze ezo ezr ezz ibb ibe ibi ibo ibp ibr ibt ibz ie- iee iei iep ier iet iib iie iii iio iip iir iit io- iob ioe ioi ioo iop ior iot ipb ipe ipi ipo ipp ipr ipt ir- irb ire iri iro irp irr irt itb ite iti ito itp itt itz ize izi izo izz o-i ob- obb obe obi obo obp obr obt oeb oee oei oeo oep oer oet oib oie oii oio oip oir oit oiz oo- oob ooi ooo oop oor oot op- opb ope opi opo opp opr opt or- orb ore ori oro orp orr ort orz ot- otb ote oti oto otp otr ott otz oze ozo ozt ozz p-p pbb pbe pbi pbo pbp pbr pbt pbz peb pee pei peo pep per pet pez pib pie pii pio pip pir pit piz pob poe poi poo pop por pot poz ppb ppe ppi ppo ppp ppr ppt ppz prb pre pri pro prp prr prt prz pt- ptb pte pti pto ptp ptr ptt ptz pzp pzt rbb rbe rbi rbo rbp rbr rbt re- reb ree rei reo rep rer ret rez rib rie rii rio rip rir rit riz rob roe roi roo rop ror rot roz rpb rpe rpi rpo rpp rpr rpt rpz rrb rri rrp rrr rrt rtb rte rti rto rtp rtr rtt rtz rzb rze rzo tbb tbe tbi tbo tbp tbr tbt tbz te- teb tee tei teo tep ter tet tez tib tie tii tio tip tir tit tiz to- tob toe toi too top tor tot toz tpb tpe tpi tpo tpp tpr tpt tpz trb tre tri tro trp trr trt trz ttb tte tti tto ttp ttr ttt tze zbb zbr zbt zeb zee zeo zep zer zet zez zib zie zio zip zir zit ziz zo- zob zoe zoi zoo zor zot zpe zpi zpo zpp zpr zpt zro zrp zte ztr zzr zzt zzz

bbbb bbeb bbet bbpr bebb bebe bebi bebo beeb beep beer beet beir beit beo- beor beot bepo bere beri bero berr bert bete beti beto bett betz beze bezi bibb bibe bibi bibo bieb bier biet bio- bioi biot bipp birb bire biri biro birr birt bite bito bitt bitz bize bizz bobb bobe bobi bobo boee boeo boep boer boet boi- boie boii boit boob booe boop boor boot booz bope bopp bor- bore bori boro borr bort borz botb bote boti boto bott bozi bozo bpoe bpot bpti breb bree brei breo brep brer bret brez brie brio brit briz brob broe broo bror brot broz brrr btbp btie btob btor btrt bttb bzer bzie bzip bzoe bzzt bzzz ebbo ebbr eber ebit eboe eboo ebor ebpo ebro eeee eero eete eeze eiei eier eipo eipr eire eitb eiti eito eitr eizo eoir eore eori eoto epee eper epi- epie epip epit epor epot eppo eppp eprb epro eprp epte erbb erbe ereb erei erer eret erez erie erio erit eriz erob eroe eroi eroo erpe erre erro ertz erzi etbr etee eter etio etoe etre etro ette etti etto ezer ezio ezop ezri ezzo i-be ibet ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iiop iitr iitt iobi ioee ioii ioio ioit iooi iooo iore iori iote ioto iper ipet ipie ipoe ipop ippo ippr ipri ipto irbe irbp iree irer iri- irie irio irip irob irop irpe irre irri irte irti irtp itbe itep iter itet itie itoi itoo itor itri itto izet izze izzo o-eo obbo ober obet obie obit oboe oboi obor obot obre obri obro oere oeti oetz oier oiii oire oirt oiti oitz oize oobe oobi ooer oooo oore oort ootb ootp ooze oozi opei opep oper opet opie opii opio opit opo- opor oppi oppo opti opto orbb orbe orbi orbo ore- oreb oreo orer ori- orie orio orit oro- oroe oror orot oroz orpe orpi orri orro orte orto orzo otee otep oter otit oto- otoe otoo otor otpp otre otro otte otti otto otzi ozee ozer ozet ozie peep peer peet peio peip peir peit peor pepe pepi pepo per- pere peri pero perp perr pert pete peti peto petr pett petz peze pezo pibb pibi piep pier piet piip piob piot pioz pipe pipi pipo pipp pire piri piro pirr pite piti pito pitr pitt pitz pize pobo poer poet poio poop poor poot pop- pope popi popo popp popt porb pore pori poro porr port porz pote poti poto pott poze pozo pper ppib ppie pppo pppp pptt pre- preb pree prep pret prez pri- prie prii pro- prob proe proo prop prot proz prri prti prtp prtr pter ptop rbbb rbbr rebb rebe rebo reeb reep reet reii reir reit reiz reop reot repe repi repo repp repr rept rere reri rero rert rete reti reto retr rett retz reze rezi rib- ribe ribo riep rier riet riez riot rioz ripe ripi ripp ripr ript rire riri rite riti rito ritt ritz rize rizi rizz rob- robb robe robi robo robt roer roet roio roir roit roiz roob rooi roop roor root rooz rope ropo rore rori roro rort rote roti roto rotr rott roze rozi rozz rpet rpii