-er b-p bbb bbd bbe bbf bbi bbo bbp bbr bbs bbt bdb bdd bde bdf bdi bdo bdp bdr bds bdt be- beb bed bee bef bei beo bep ber bes bet bfb bfd bfe bff bfi bfo bfp bfr bfs bft bi- bib bid bie bif bii bio bip bir bis bit bob bod boe bof boi boo bop bor bos bot bpb bpd bpe bpf bpi bpo bpp bpr bps bpt brb brd bre brf bri bro brp brr brs brt bsb bsd bse bsf bsi bso bsp bsr bss bst btb btd bte btf bti bto btp btr bts btt dbb dbd dbe dbf dbi dbo dbp dbr dbs dbt ddb ddd dde ddf ddi ddo ddp ddr dds ddt de- deb ded dee def dei deo dep der des det dfb dfd dfe dff dfi dfo dfp dfr dfs dft di- dib did die dif dii dio dip dir dis dit dob dod doe dof doi doo dop dor dos dot dpb dpd dpe dpf dpi dpo dpp dpr dps dpt drb drd dre dri dro drp drr drs drt dsb dsd dse dsf dsi dso dsp dsr dss dst dtb dtd dte dtf dti dto dtp dtr dts dtt ebb ebd ebe ebf ebi ebo ebp ebr ebs ebt ed- edb edd ede edf edi edo edp edr eds edt eeb eed eee eef eeo eep eer ees eet ef- efb efd efe eff efi efo efp efr efs eft eib eid eie eif eii eio eip eir eis eit eo- eob eod eoe eof eoi eoo eop eor eos eot ep- epb epd epe epf epi epo epp epr eps ept erb erd ere erf eri ero erp err ers ert es- esb esd ese esf esi eso esp esr ess est etb etd ete etf eti eto etp etr ets ett fbb fbd fbe fbf fbi fbo fbp fbr fbs fbt fdb fdd fde fdf fdi fdo fdp fdr fds fdt feb fed fee fef fei feo fep fer fes fet ffd ffe fff ffi ffo ffp ffr ffs fft fib fid fie fif fii fip fir fis fit fob foe fof foi foo fop for fos fot fpb fpd fpe fpi fpo fpp fpr fps fpt frb frd fre frf fri fro frp frr frs frt fsb fsd fse fsf fsi fso fsp fsr fss fst ftb ftd fte ftf fti fto ftp ftr fts ftt i-d i-f ibb ibd ibe ibf ibi ibo ibp ibr ibs ibt idb idd ide idf idi ido idp idr ids idt ie- ied iee ief iei iep ier ies iet ifb ifd ife iff ifi ifo ifp ifr ifs ift iib iid iie iif iii iio iip iir iis iit io- iob iod ioe iof ioi ioo iop ior ios iot ipb ipd ipe ipf ipi ipo ipp ipr ips ipt ir- irb ird ire irf iri iro irp irr irs irt is- isb isd ise isf isi iso isp isr iss ist itb itd ite itf iti ito itp its itt o-i ob- obb obd obe obf obi obo obp obr obs obt odb odd ode odf odi odo odp odr ods odt oeb oed oee oef oei oeo oep oer oes oet of- ofb ofd ofe off ofi ofo ofp ofr ofs oft oib oid oie oif oii oio oip oir ois oit oo- oob ood oof ooi ooo oop oor oos oot op- opb opd ope opf opi opo opp opr ops opt or- orb ord ore orf ori oro orp orr ors ort os- osb osd ose osf osi oso osp osr oss ost ot- otb otd ote otf oti oto otp otr ots ott p-p pbb pbd pbe pbf pbi pbo pbp pbr pbs pbt pdb pdd pde pdf pdi pdo pdp pdr pds pdt peb ped pee pef pei peo pep per pes pet pfb pfd pfe pff pfi pfo pfp pfr pfs pft pib pid pie pif pii pio pip pir pis pit pob pod poe pof poi poo pop por pos pot ppb ppd ppe ppf ppi ppo ppp ppr pps ppt prb prd pre prf pri pro prp prr prs prt ps- psb psd pse psf psi pso psp psr pss pst pt- ptb ptd pte ptf pti pto ptp ptr pts ptt rbb rbd rbe rbf rbi rbo rbp rbr rbs rbt rdb rdd rde rdf rdi rdo rdp rdr rds rdt re- reb red ree ref rei reo rep rer res ret rfb rfd rfe rff rfi rfo rfp rfr rfs rft rib rid rie rif rii rio rip rir ris rit rob rod roe rof roi roo rop ror ros rot rpb rpd rpe rpf rpi rpo rpp rpr rps rpt rrb rrd rrf rri rrp rrr rrs rrt rsb rsd rse rsf rsi rso rsp rsr rss rst rtb rtd rte rtf rti rto rtp rtr rts rtt sbb sbd sbe sbf sbi sbo sbp sbr sbs sbt sdb sdd sde sdf sdi sdo sdp sdr sds sdt se- seb sed see sef sei seo sep ser ses set sfb sfd sfe sff sfi sfo sfp sfr sfs sft sib sid sie sif sii sio sip sir sis sit sob sod soe sof soi soo sop sor sos sot spb spd spe spf spi spo spp spr sps spt sr- srb srd sre srf sri sro srp srr srs srt ss- ssb ssd sse ssf ssi sso ssp ssr sss sst stb std ste stf sti sto stp str sts stt tbb tbd tbe tbf tbi tbo tbp tbr tbs tbt tdb tdd tde tdf tdi tdo tdp tdr tds tdt te- teb ted tee tef tei teo tep ter tes tet tfb tfd tfe tff tfi tfo tfp tfr tfs tft tib tid tie tif tii tio tip tir tis tit to- tob tod toe tof toi too top tor tos tot tpb tpd tpe tpf tpi tpo tpp tpr tps tpt trb trd tre trf tri tro trp trr