-er -ol b-p bbb bbe bbf bbi bbl bbo bbp bbr bbs bbt be- beb bee bef bei bel beo bep ber bes bet bfb bfe bff bfi bfl bfo bfp bfr bfs bft bi- bib bie bif bii bil bio bip bir bis bit blb ble blf bli bll blo blp blr bls blt bob boe bof boi bol boo bop bor bos bot bpb bpe bpf bpi bpl bpo bpp bpr bps bpt brb bre brf bri brl bro brp brr brs brt bsb bse bsf bsi bsl bso bsp bsr bss bst btb bte btf bti btl bto btp btr bts btt ebb ebe ebf ebi ebl ebo ebp ebr ebs ebt eeb eee eef eel eeo eep eer ees eet ef- efb efe eff efi efl efo efp efr efs eft eib eie eif eii eil eio eip eir eis eit elb ele elf eli ell elo elp elr els elt eo- eob eoe eof eoi eol eoo eop eor eos eot ep- epb epe epf epi epl epo epp epr eps ept erb ere erf eri erl ero erp err ers ert es- esb ese esf esi esl eso esp esr ess est etb ete etf eti etl eto etp etr ets ett fbb fbe fbf fbi fbl fbo fbp fbr fbs fbt feb fee fef fei fel feo fep fer fes fet ffe fff ffi ffl ffo ffp ffr ffs fft fib fie fif fii fil fip fir fis fit flb fle flf fli fll flo flp flr fls flt fob foe fof foi fol foo fop for fos fot fpb fpe fpi fpl fpo fpp fpr fps fpt frb fre frf fri frl fro frp frr frs frt fsb fse fsf fsi fsl fso fsp fsr fss fst ftb fte ftf fti ftl fto ftp ftr fts ftt i-f ibb ibe ibf ibi ibl ibo ibp ibr ibs ibt ie- iee ief iei iel iep ier ies iet ifb ife iff ifi ifl ifo ifp ifr ifs ift iib iie iif iii iil iio iip iir iis iit il- ilb ile ilf ili ill ilo ilp ilr ils ilt io- iob ioe iof ioi iol ioo iop ior ios iot ipb ipe ipf ipi ipl ipo ipp ipr ips ipt ir- irb ire irf iri irl iro irp irr irs irt is- isb ise isf isi isl iso isp isr iss ist itb ite itf iti itl ito itp its itt l-p lbb lbe lbf lbi lbl lbo lbp lbr lbs lbt leb lee lef lei lel leo lep ler les let lfb lfe lff lfi lfl lfo lfp lfr lfs lft lib lie lif lii lil lio lip lir lis lit llb lle llf lli lll llo llp llr lls llt lob loe lof loi lol loo lop lor los lot lpb lpe lpf lpi lpl lpo lpp lpr lps lpt lrb lrf lri lro lrp lrr lrs lrt lsb lse lsf lsi lsl lso lsp lsr lss lst ltb lte ltf lti ltl lto ltp ltr lts ltt o-i ob- obb obe obf obi obl obo obp obr obs obt oeb oee oef oei oel oeo oep oer oes oet of- ofb ofe off ofi ofl ofo ofp ofr ofs oft oib oie oif oii oil oio oip oir ois oit olb ole olf oli oll olo olp ols olt oo- oob oof ooi ool ooo oop oor oos oot op- opb ope opf opi opl opo opp opr ops opt or- orb ore orf ori orl oro orp orr ors ort os- osb ose osf osi osl oso osp osr oss ost ot- otb ote otf oti otl oto otp otr ots ott p-p pbb pbe pbf pbi pbl pbo pbp pbr pbs pbt peb pee pef pei pel peo pep per pes pet pfb pfe pff pfi pfl pfo pfp pfr pfs pft pib pie pif pii pil pio pip pir pis pit plb ple plf pli pll plo plp plr pls plt pob poe pof poi pol poo pop por pos pot ppb ppe ppf ppi ppl ppo ppp ppr pps ppt prb pre prf pri prl pro prp prr prs prt ps- psb pse psf psi psl pso psp psr pss pst pt- ptb pte ptf pti ptl pto ptp ptr pts ptt rbb rbe rbf rbi rbl rbo rbp rbr rbs rbt re- reb ree ref rei rel reo rep rer res ret rfb rfe rff rfi rfl rfo rfp rfr rfs rft rib rie rif rii ril rio rip rir ris rit rle rlf rli rll rlo rlp rlr rls rlt rob roe rof roi rol roo rop ror ros rot rpb rpe rpf rpi rpl rpo rpp rpr rps rpt rrb rrf rri rrl rrp rrr rrs rrt rsb rse rsf rsi rsl rso rsp rsr rss rst rtb rte rtf rti rtl rto rtp rtr rts rtt sbb sbe sbf sbi sbl sbo sbp sbr sbs sbt se- seb see sef sei sel seo sep ser ses set sfb sfe sff sfi sfl sfo sfp sfr sfs sft sib sie sif sii sil sio sip sir sis sit slb sle slf sli sll slo slp slr sls slt sob soe sof soi sol soo sop sor sos sot spb spe spf spi spl spo spp spr sps spt sr- srb sre srf sri srl sro srp srr srs srt ss- ssb sse ssf ssi ssl sso ssp ssr sss sst stb ste stf sti stl sto stp str sts stt tbb tbe tbf tbi tbl tbo tbp tbr tbs tbt te- teb tee tef tei tel teo tep ter tes tet tfb tfe tff tfi tfl tfo tfp tfr tfs tft tib tie tif tii til tio tip tir tis tit tle tlf tli tll tlo tlp tlr tls tlt to- tob toe tof toi tol too top tor tos tot tpb tpe tpf tpi tpl tpo tpp tpr tps tpt trb tre trf tri trl tro trp trr trs trt tsb tse