-er bbb bbd bbe bbg bbi bbo bbr bbs bdb bdd bde bdg bdi bdo bdr bds be- beb bed bee beg bei beo ber bes bgb bgd bge bgg bgi bgo bgr bgs bi- bib bid bie big bii bio bir bis bob bod boe bog boi boo bor bos brb brd bre brg bri bro brr brs bsb bsd bse bsg bsi bso bsr bss dbb dbd dbe dbg dbi dbo dbr dbs ddb ddd dde ddg ddi ddo ddr dds de- deb ded dee deg dei deo der des dgd dge dgg dgi dgr dgs di- dib did die dig dii dio dir dis dob dod doe dog doi doo dor dos drb drd dre drg dri dro drr drs dsb dsd dse dsg dsi dso dsr dss ebb ebd ebe ebg ebi ebo ebr ebs ed- edb edd ede edg edi edo edr eds eeb eed eee eeg eeo eer ees egb egd ege egg egi ego egr egs eib eid eie eig eii eio eir eis eo- eob eod eoe eog eoi eoo eor eos erb erd ere erg eri ero err ers es- esb esd ese esg esi eso esr ess g-d gbd gbe gbg gbi gbo gbr gbs gdb gdd gde gdi gdo gdr gds ge- geb ged gee geg gei geo ger ges ggb ggd ggg ggi ggo ggr ggs gib gid gie gig gii gio gir gis gob god goe gog goi goo gor gos grb grd gre grg gri gro grr grs gsb gsd gse gsg gsi gso gsr gss i-d ibb ibd ibe ibg ibi ibo ibr ibs idb idd ide idg idi ido idr ids ie- ied iee ieg iei ier ies igb igd ige igg igi igo igr igs iib iid iie iii iio iir iis io- iob iod ioe iog ioi ioo ior ios ir- irb ird ire irg iri iro irr irs is- isb isd ise isg isi iso isr iss o-i ob- obb obd obe obg obi obo obr obs odb odd ode odg odi odo odr ods oeb oed oee oeg oei oeo oer oes ogd oge ogg ogi ogo ogs oib oid oie oii oio oir ois oo- oob ood oog ooi ooo oor oos or- orb ord ore org ori oro orr ors os- osb osd ose osg osi oso osr oss rbb rbd rbe rbg rbi rbo rbr rbs rdb rdd rde rdg rdi rdo rdr rds re- reb red ree reg rei reo rer res rgb rgd rge rgg rgi rgo rgr rgs rib rid rie rig rii rio rir ris rob rod roe rog roi roo ror ros rrb rrd rrg rri rrr rrs rsb rsd rse rsg rsi rso rsr rss sbb sbd sbe sbg sbi sbo sbr sbs sdb sdd sde sdg sdi sdo sdr sds se- seb sed see seg sei seo ser ses sgb sgd sge sgg sgi sgo sgr sgs sib sid sie sig sii sio sir sis sob sod soe sog soi soo sor sos sr- srb srd sre srg sri sro srr srs ss- ssb ssd sse ssg ssi sso ssr sss