-er b-p bbb bbd bbe bbg bbi bbo bbp bbr bbs bbt bdb bdd bde bdg bdi bdo bdp bdr bds bdt be- beb bed bee beg bei beo bep ber bes bet bgb bgd bge bgg bgi bgo bgp bgr bgs bgt bi- bib bid bie big bii bio bip bir bis bit bob bod boe bog boi boo bop bor bos bot bpb bpd bpe bpg bpi bpo bpp bpr bps bpt brb brd bre brg bri bro brp brr brs brt bsb bsd bse bsg bsi bso bsp bsr bss bst btb btd bte btg bti bto btp btr bts btt dbb dbd dbe dbg dbi dbo dbp dbr dbs dbt ddb ddd dde ddg ddi ddo ddp ddr dds ddt de- deb ded dee deg dei deo dep der des det dgd dge dgg dgi dgp dgr dgs dgt di- dib did die dig dii dio dip dir dis dit dob dod doe dog doi doo dop dor dos dot dpb dpd dpe dpg dpi dpo dpp dpr dps dpt drb drd dre drg dri dro drp drr drs drt dsb dsd dse dsg dsi dso dsp dsr dss dst dtb dtd dte dtg dti dto dtp dtr dts dtt ebb ebd ebe ebg ebi ebo ebp ebr ebs ebt ed- edb edd ede edg edi edo edp edr eds edt eeb eed eee eeg eeo eep eer ees eet egb egd ege egg egi ego egp egr egs egt eib eid eie eig eii eio eip eir eis eit eo- eob eod eoe eog eoi eoo eop eor eos eot ep- epb epd epe epg epi epo epp epr eps ept erb erd ere erg eri ero erp err ers ert es- esb esd ese esg esi eso esp esr ess est etb etd ete etg eti eto etp etr ets ett g-d g-p gbd gbe gbg gbi gbo gbp gbr gbs gbt gdb gdd gde gdi gdo gdp gdr gds gdt ge- geb ged gee geg gei geo gep ger ges get ggb ggd ggg ggi ggo ggp ggr ggs ggt gib gid gie gig gii gio gip gir gis git gob god goe gog goi goo gop gor gos got gpb gpd gpe gpg gpi gpo gpp gpr gps gpt grb grd gre grg gri gro grp grr grs grt gsb gsd gse gsg gsi gso gsp gsr gss gst gtb gtd gte gtg gti gto gtp gtr gts gtt i-d ibb ibd ibe ibg ibi ibo ibp ibr ibs ibt idb idd ide idg idi ido idp idr ids idt ie- ied iee ieg iei iep ier ies iet igb igd ige igg igi igo igp igr igs igt iib iid iie iii iio iip iir iis iit io- iob iod ioe iog ioi ioo iop ior ios iot ipb ipd ipe ipg ipi ipo ipp ipr ips ipt ir- irb ird ire irg iri iro irp irr irs irt is- isb isd ise isg isi iso isp isr iss ist itb itd ite itg iti ito itp its itt o-i ob- obb obd obe obg obi obo obp obr obs obt odb odd ode odg odi odo odp odr ods odt oeb oed oee oeg oei oeo oep oer oes oet ogd oge ogg ogi ogo ogp ogs ogt oib oid oie oii oio oip oir ois oit oo- oob ood oog ooi ooo oop oor oos oot op- opb opd ope opg opi opo opp opr ops opt or- orb ord ore org ori oro orp orr ors ort os- osb osd ose osg osi oso osp osr oss ost ot- otb otd ote otg oti oto otp otr ots ott p-p pbb pbd pbe pbg pbi pbo pbp pbr pbs pbt pdb pdd pde pdg pdi pdo pdp pdr pds pdt peb ped pee peg pei peo pep per pes pet pgb pgd pge pgg pgi pgo pgp pgr pgs pgt pib pid pie pig pii pio pip pir pis pit pob pod poe pog poi poo pop por pos pot ppb ppd ppe ppg ppi ppo ppp ppr pps ppt prb prd pre prg pri pro prp prr prs prt ps- psb psd pse psg psi pso psp psr pss pst pt- ptb ptd pte ptg pti pto ptp ptr pts ptt rbb rbd rbe rbg rbi rbo rbp rbr rbs rbt rdb rdd rde rdg rdi rdo rdp rdr rds rdt re- reb red ree reg rei reo rep rer res ret rgb rgd rge rgg rgi rgo rgp rgr rgs rgt rib rid rie rig rii rio rip rir ris rit rob rod roe rog roi roo rop ror ros rot rpb rpd rpe rpg rpi rpo rpp rpr rps rpt rrb rrd rrg rri rrp rrr rrs rrt rsb rsd rse rsg rsi rso rsp rsr rss rst rtb rtd rte rtg rti rto rtp rtr rts rtt sbb sbd sbe sbg sbi sbo sbp sbr sbs sbt sdb sdd sde sdg sdi sdo sdp sdr sds sdt se- seb sed see seg sei seo sep ser ses set sgb sgd sge sgg sgi sgo sgp sgr sgs sgt sib sid sie sig sii sio sip sir sis sit sob sod soe sog soi soo sop sor sos sot spb spd spe spg spi spo spp spr sps spt sr- srb srd sre srg sri sro srp srr srs srt ss- ssb ssd sse ssg ssi sso ssp ssr sss sst stb std ste stg sti sto stp str sts stt tbb tbd tbe tbg tbi tbo tbp tbr tbs tbt tdb tdd tde tdg tdi tdo tdp tdr tds tdt te- teb ted tee teg tei teo tep ter tes tet tgb tge tgg tgi tgo tgp tgr tgs tgt tib tid tie tig tii tio tip tir tis tit to- tob tod toe tog toi too top tor tos tot tpb tpd tpe tpg tpi tpo tpp tpr tps tpt trb trd tre trg tri tro trp trr trs trt tsb tsd tse