-er b-p bbb bbd bbe bbg bbi bbo bbp bbr bbt bdb bdd bde bdg bdi bdo bdp bdr bdt be- beb bed bee beg bei beo bep ber bet bgb bgd bge bgg bgi bgo bgp bgr bgt bi- bib bid bie big bii bio bip bir bit bob bod boe bog boi boo bop bor bot bpb bpd bpe bpg bpi bpo bpp bpr bpt brb brd bre brg bri bro brp brr brt btb btd bte btg bti bto btp btr btt dbb dbd dbe dbg dbi dbo dbp dbr dbt ddb ddd dde ddg ddi ddo ddp ddr ddt de- deb ded dee deg dei deo dep der det dgd dge dgg dgi dgp dgr dgt di- dib did die dig dii dio dip dir dit dob dod doe dog doi doo dop dor dot dpb dpd dpe dpg dpi dpo dpp dpr dpt drb drd dre drg dri dro drp drr drt dtb dtd dte dtg dti dto dtp dtr dtt ebb ebd ebe ebg ebi ebo ebp ebr ebt ed- edb edd ede edg edi edo edp edr edt eeb eed eee eeg eeo eep eer eet egb egd ege egg egi ego egp egr egt eib eid eie eig eii eio eip eir eit eo- eob eod eoe eog eoi eoo eop eor eot ep- epb epd epe epg epi epo epp epr ept erb erd ere erg eri ero erp err ert etb etd ete etg eti eto etp etr ett g-d g-p gbd gbe gbg gbi gbo gbp gbr gbt gdb gdd gde gdi gdo gdp gdr gdt ge- geb ged gee geg gei geo gep ger get ggb ggd ggg ggi ggo ggp ggr ggt gib gid gie gig gii gio gip gir git gob god goe gog goi goo gop gor got gpb gpd gpe gpg gpi gpo gpp gpr gpt grb grd gre grg gri gro grp grr grt gtb gtd gte gtg gti gto gtp gtr gtt i-d ibb ibd ibe ibg ibi ibo ibp ibr ibt idb idd ide idg idi ido idp idr idt ie- ied iee ieg iei iep ier iet igb igd ige igg igi igo igp igr igt iib iid iie iii iio iip iir iit io- iob iod ioe iog ioi ioo iop ior iot ipb ipd ipe ipg ipi ipo ipp ipr ipt ir- irb ird ire irg iri iro irp irr irt itb itd ite itg iti ito itp itt o-i ob- obb obd obe obg obi obo obp obr obt odb odd ode odg odi odo odp odr odt oeb oed oee oeg oei oeo oep oer oet ogd oge ogg ogi ogo ogp ogt oib oid oie oii oio oip oir oit oo- oob ood oog ooi ooo oop oor oot op- opb opd ope opg opi opo opp opr opt or- orb ord ore org ori oro orp orr ort ot- otb otd ote otg oti oto otp otr ott p-p pbb pbd pbe pbg pbi pbo pbp pbr pbt pdb pdd pde pdg pdi pdo pdp pdr pdt peb ped pee peg pei peo pep per pet pgb pgd pge pgg pgi pgo pgp pgr pgt pib pid pie pig pii pio pip pir pit pob pod poe pog poi poo pop por pot ppb ppd ppe ppg ppi ppo ppp ppr ppt prb prd pre prg pri pro prp prr prt pt- ptb ptd pte ptg pti pto ptp ptr ptt rbb rbd rbe rbg rbi rbo rbp rbr rbt rdb rdd rde rdg rdi rdo rdp rdr rdt re- reb red ree reg rei reo rep rer ret rgb rgd rge rgg rgi rgo rgp rgr rgt rib rid rie rig rii rio rip rir rit rob rod roe rog roi roo rop ror rot rpb rpd rpe rpg rpi rpo rpp rpr rpt rrb rrd rrg rri rrp rrr rrt rtb rtd rte rtg rti rto rtp rtr rtt tbb tbd tbe tbg tbi tbo tbp tbr tbt tdb tdd tde tdg tdi tdo tdp tdr tdt te- teb ted tee teg tei teo tep ter tet tgb tge tgg tgi tgo tgp tgr tgt tib tid tie tig tii tio tip tir tit to- tob tod toe tog toi too top tor tot tpb tpd tpe tpg tpi tpo tpp tpr tpt trb trd tre trg tri tro trp trr trt ttb ttd tte ttg tti tto ttp ttr ttt