-er b-p bbb bbe bbf bbi bbo bbp bbr bbs bbt be- beb bee bef bei beo bep ber bes bet bfb bfe bff bfi bfo bfp bfr bfs bft bi- bib bie bif bii bio bip bir bis bit bob boe bof boi boo bop bor bos bot bpb bpe bpf bpi bpo bpp bpr bps bpt brb bre brf bri bro brp brr brs brt bsb bse bsf bsi bso bsp bsr bss bst btb bte btf bti bto btp btr bts btt ebb ebe ebf ebi ebo ebp ebr ebs ebt eeb eee eef eeo eep eer ees eet ef- efb efe eff efi efo efp efr efs eft eib eie eif eii eio eip eir eis eit eo- eob eoe eof eoi eoo eop eor eos eot ep- epb epe epf epi epo epp epr eps ept erb ere erf eri ero erp err ers ert es- esb ese esf esi eso esp esr ess est etb ete etf eti eto etp etr ets ett fbb fbe fbf fbi fbo fbp fbr fbs fbt feb fee fef fei feo fep fer fes fet ffe fff ffi ffo ffp ffr ffs fft fib fie fif fii fip fir fis fit fob foe fof foi foo fop for fos fot fpb fpe fpi fpo fpp fpr fps fpt frb fre frf fri fro frp frr frs frt fsb fse fsf fsi fso fsp fsr fss fst ftb fte ftf fti fto ftp ftr fts ftt i-f ibb ibe ibf ibi ibo ibp ibr ibs ibt ie- iee ief iei iep ier ies iet ifb ife iff ifi ifo ifp ifr ifs ift iib iie iif iii iio iip iir iis iit io- iob ioe iof ioi ioo iop ior ios iot ipb ipe ipf ipi ipo ipp ipr ips ipt ir- irb ire irf iri iro irp irr irs irt is- isb ise isf isi iso isp isr iss ist itb ite itf iti ito itp its itt o-i ob- obb obe obf obi obo obp obr obs obt oeb oee oef oei oeo oep oer oes oet of- ofb ofe off ofi ofo ofp ofr ofs oft oib oie oif oii oio oip oir ois oit oo- oob oof ooi ooo oop oor oos oot op- opb ope opf opi opo opp opr ops opt or- orb ore orf ori oro orp orr ors ort os- osb ose osf osi oso osp osr oss ost ot- otb ote otf oti oto otp otr ots ott p-p pbb pbe pbf pbi pbo pbp pbr pbs pbt peb pee pef pei peo pep per pes pet pfb pfe pff pfi pfo pfp pfr pfs pft pib pie pif pii pio pip pir pis pit pob poe pof poi poo pop por pos pot ppb ppe ppf ppi ppo ppp ppr pps ppt prb pre prf pri pro prp prr prs prt ps- psb pse psf psi pso psp psr pss pst pt- ptb pte ptf pti pto ptp ptr pts ptt rbb rbe rbf rbi rbo rbp rbr rbs rbt re- reb ree ref rei reo rep rer res ret rfb rfe rff rfi rfo rfp rfr rfs rft rib rie rif rii rio rip rir ris rit rob roe rof roi roo rop ror ros rot rpb rpe rpf rpi rpo rpp rpr rps rpt rrb rrf rri rrp rrr rrs rrt rsb rse rsf rsi rso rsp rsr rss rst rtb rte rtf rti rto rtp rtr rts rtt sbb sbe sbf sbi sbo sbp sbr sbs sbt se- seb see sef sei seo sep ser ses set sfb sfe sff sfi sfo sfp sfr sfs sft sib sie sif sii sio sip sir sis sit sob soe sof soi soo sop sor sos sot spb spe spf spi spo spp spr sps spt sr- srb sre srf sri sro srp srr srs srt ss- ssb sse ssf ssi sso ssp ssr sss sst stb ste stf sti sto stp str sts stt tbb tbe tbf tbi tbo tbp tbr tbs tbt te- teb tee tef tei teo tep ter tes tet tfb tfe tff tfi tfo tfp tfr tfs tft tib tie tif tii tio tip tir tis tit to- tob toe tof toi too top tor tos tot tpb tpe tpf tpi tpo tpp tpr tps tpt trb tre trf tri tro trp trr trs trt tsb tse tsf tsi tso tsp tsr tss tst ttb tte ttf tti tto ttp ttr tts ttt

-ose bbbb bbbs bbeb bbet bbpr bebb bebe bebi bebo beeb beef beep beer bees beet befe beff befo beft beir beis beit beo- beof beor beos beot bepo bere beri bero berr bers bert bes- bese beso bess best bete beti beto bets bett bffs bfpo bfpp bfsi bfsr bfts bftt bibb bibe bibi bibo bibs bieb bief bier bies biet biff bifi biis bio- bioi bios biot bipp bips birb bire biri biro birr birs birt bis- bise biso bisp biss bist bite bito bits bitt bobb bobe bobi bobo bobs boee boef boeo boep boer boes boet bofe boff bofs boi- boie boii bois boit boob booe boof boop boor boos boot bope bopp bops bor- bore borf bori boro borr bors bort bose bosi boso boss bost botb bote boti boto bots bott bpoe bpot bptf bpti breb bree bref brei breo brep brer bres bret brie brio bris brit brob broe broo bror bros brot brrr brrs brsb brsr brst bseb bsee bser bses bset bsff bsfs bsos bspp bspr bsse bsts btbp btie btob btor btps btrt btss bttb ebbo ebbr ebbs eber ebes ebis ebit eboe eboo ebor ebos ebpo ebro eeee eees eefe eeps eero eers eese eesi eete eets efbr efeo efes efet effi effs efit efor efsi eft- eftp efts eiei eier eies eifs eipo eipr eire eirs eise eiso eiss eist eitb eiti eito eitr eoes eoir eois eore eori eost eoto eots epee eper epes epi- epie epip epis