-er b-p bbb bbd bbe bbf bbg bbi bbo bbp bbr bbs bdb bdd bde bdf bdg bdi bdo bdp bdr bds be- beb bed bee bef beg bei beo bep ber bes bfb bfd bfe bff bfg bfi bfo bfp bfr bfs bgb bgd bge bgf bgg bgi bgo bgp bgr bgs bi- bib bid bie bif big bii bio bip bir bis bob bod boe bof bog boi boo bop bor bos bpb bpd bpe bpf bpg bpi bpo bpp bpr bps brb brd bre brf brg bri bro brp brr brs bsb bsd bse bsf bsg bsi bso bsp bsr bss dbb dbd dbe dbf dbg dbi dbo dbp dbr dbs ddb ddd dde ddf ddg ddi ddo ddp ddr dds de- deb ded dee def deg dei deo dep der des dfb dfd dfe dff dfg dfi dfo dfp dfr dfs dgd dge dgf dgg dgi dgp dgr dgs di- dib did die dif dig dii dio dip dir dis dob dod doe dof dog doi doo dop dor dos dpb dpd dpe dpf dpg dpi dpo dpp dpr dps drb drd dre drg dri dro drp drr drs dsb dsd dse dsf dsg dsi dso dsp dsr dss ebb ebd ebe ebf ebg ebi ebo ebp ebr ebs ed- edb edd ede edf edg edi edo edp edr eds eeb eed eee eef eeg eeo eep eer ees ef- efb efd efe eff efg efi efo efp efr efs egb egd ege egf egg egi ego egp egr egs eib eid eie eif eig eii eio eip eir eis eo- eob eod eoe eof eog eoi eoo eop eor eos ep- epb epd epe epf epg epi epo epp epr eps erb erd ere erf erg eri ero erp err ers es- esb esd ese esf esg esi eso esp esr ess fbb fbd fbe fbf fbg fbi fbo fbp fbr fbs fdb fdd fde fdf fdg fdi fdo fdp fdr fds feb fed fee fef feg fei feo fep fer fes ffd ffe fff ffg ffi ffo ffp ffr ffs fgb fgd fge fgf fgg fgi fgp fgr fgs fib fid fie fif fig fii fip fir fis fob foe fof fog foi foo fop for fos fpb fpd fpe fpg fpi fpo fpp fpr fps frb frd fre frf frg fri fro frp frr frs fsb fsd fse fsf fsg fsi fso fsp fsr fss g-d g-p gbd gbe gbf gbg gbi gbo gbp gbr gbs gdb gdd gde gdf gdi gdo gdp gdr gds ge- geb ged gee gef geg gei geo gep ger ges gfb gfd gfe gff gfi gfo gfp gfr gfs ggb ggd ggg ggi ggo ggp ggr ggs gib gid gie gif gig gii gio gip gir gis gob god goe gof gog goi goo gop gor gos gpb gpd gpe gpf gpg gpi gpo gpp gpr gps grb grd gre grf grg gri gro grp grr grs gsb gsd gse gsf gsg gsi gso gsp gsr gss i-d i-f ibb ibd ibe ibf ibg ibi ibo ibp ibr ibs idb idd ide idf idg idi ido idp idr ids ie- ied iee ief ieg iei iep ier ies ifb ifd ife iff ifg ifi ifo ifp ifr ifs igb igd ige igf igg igi igo igp igr igs iib iid iie iif iii iio iip iir iis io- iob iod ioe iof iog ioi ioo iop ior ios ipb ipd ipe ipf ipg ipi ipo ipp ipr ips ir- irb ird ire irf irg iri iro irp irr irs is- isb isd ise isf isg isi iso isp isr iss o-i ob- obb obd obe obf obg obi obo obp obr obs odb odd ode odf odg odi odo odp odr ods oeb oed oee oef oeg oei oeo oep oer oes of- ofb ofd ofe off ofg ofi ofo ofp ofr ofs ogd oge ogf ogg ogi ogo ogp ogs oib oid oie oif oii oio oip oir ois oo- oob ood oof oog ooi ooo oop oor oos op- opb opd ope opf opg opi opo opp opr ops or- orb ord ore orf org ori oro orp orr ors os- osb osd ose osf osg osi oso osp osr oss p-p pbb pbd pbe pbf pbg pbi pbo pbp pbr pbs pdb pdd pde pdf pdg pdi pdo pdp pdr pds peb ped pee pef peg pei peo pep per pes pfb pfd pfe pff pfg pfi pfo pfp pfr pfs pgb pgd pge pgf pgg pgi pgo pgp pgr pgs pib pid pie pif pig pii pio pip pir pis pob pod poe pof pog poi poo pop por pos ppb ppd ppe ppf ppg ppi ppo ppp ppr pps prb prd pre prf prg pri pro prp prr prs ps- psb psd pse psf psg psi pso psp psr pss rbb rbd rbe rbf rbg rbi rbo rbp rbr rbs rdb rdd rde rdf rdg rdi rdo rdp rdr rds re- reb red ree ref reg rei reo rep rer res rfb rfd rfe rff rfg rfi rfo rfp rfr rfs rgb rgd rge rgf rgg rgi rgo rgp rgr rgs rib rid rie rif rig rii rio rip rir ris rob rod roe rof rog roi roo rop ror ros rpb rpd rpe rpf rpg rpi rpo rpp rpr rps rrb rrd rrf rrg rri rrp rrr rrs rsb rsd rse rsf rsg rsi rso rsp rsr rss sbb sbd sbe sbf sbg sbi sbo sbp sbr sbs sdb sdd sde sdf sdg sdi sdo sdp sdr sds se- seb sed see sef seg sei seo sep ser ses sfb sfd sfe sff sfg sfi sfo sfp sfr sfs sgb sgd sge sgf sgg sgi sgo sgp sgr sgs sib sid sie sif sig sii sio sip sir sis sob sod soe sof sog soi soo sop sor sos spb spd spe spf spg spi spo spp spr sps sr- srb srd sre srf srg sri sro srp srr srs ss-