-er bbb bbc bbd bbe bbf bbg bbh bbo bbr bcb bcc bcd bce bcf bcg bch bco bcr bdb bdc bdd bde bdf bdg bdh bdo bdr be- beb bec bed bee bef beg beh beo ber bfb bfc bfd bfe bff bfg bfh bfo bfr bgb bgc bgd bge bgf bgg bgh bgo bgr bhb bhc bhd bhe bhf bhg bhh bho bhr bob boc bod boe bof bog boh boo bor brb brd bre brf brg brh bro brr c-- cbb cbc cbd cbe cbf cbg cbh cbo cbr ccb ccc ccd cce ccf ccg cch cco ccr cdb cdc cdd cde cdf cdg cdh cdo cdr ce- ceb cec ced cee cef ceg ceh ceo cer cfb cfc cfd cfe cff cfg cfh cfo cfr cgb cgc cgd cge cgg cgh cgo cgr ch- chb chc chd che chf chg chh cho chr co- cob coc cod coe cof cog coh coo cor crb crc crd cre crf crg crh cro crr dbb dbc dbd dbe dbf dbg dbh dbo dbr dcb dcc dcd dce dcf dcg dco dcr ddb ddc ddd dde ddf ddg ddh ddo ddr de- deb dec ded dee def deg deh deo der dfb dfc dfd dfe dff dfg dfh dfo dfr dgc dgd dge dgf dgg dgh dgr dh- dhb dhc dhd dhe dhf dhh dho dhr dob doc dod doe dof dog doh doo dor drb drc drd dre drg dro drr ebb ebc ebd ebe ebf ebg ebh ebo ebr ec- ecb ecc ecd ece ecf ecg ech eco ecr ed- edb edc edd ede edf edg edh edo edr eeb eec eed eee eef eeg eeo eer ef- efb efc efd efe eff efg efh efo efr egb egc egd ege egf egg egh ego egr ehb ehc ehd ehe ehf ehg ehh eho ehr eo- eob eoc eod eoe eof eog eoh eoo eor erb erc erd ere erf erg erh ero err fbb fbc fbd fbe fbf fbg fbh fbo fbr fcb fcc fcd fce fcf fcg fco fcr fdb fdc fdd fde fdf fdg fdh fdo fdr feb fec fed fee fef feg feh feo fer ffc ffd ffe fff ffg ffh ffo ffr fgb fgc fgd fge fgf fgg fgh fgr fhb fhc fhe fhf fhg fhh fho fhr fob foc foe fof fog foh foo for frb frc frd fre frf frg frh fro frr g-d gbc gbd gbe gbf gbg gbh gbo gbr gcb gcc gcd gce gcf gcg gch gco gcr gdb gdc gdd gde gdf gdh gdo gdr ge- geb gec ged gee gef geg geh geo ger gfb gfc gfd gfe gff gfh gfo gfr ggb ggc ggd ggg ggh ggo ggr ghb ghc ghd ghe ghg ghh gho ghr gob goc god goe gof gog goh goo gor grb grc grd gre grf grg grh gro grr hbb hbc hbd hbe hbf hbg hbh hbo hbr hcb hcc hcd hce hcf hcg hch hco hcr hdb hdc hdd hde hdf hdg hdh hdo hdr he- heb hec hed hee hef heg heh heo her hfb hfc hfd hfe hff hfg hfh hfo hfr hgb hgc hge hgf hgg hgh hgo hgr hhb hhc hhd hhe hhf hhg hhh hho hhr hob hoc hod hoe hof hog hoh hoo hor hr- hrb hrc hrd hre hrf hrg hrh hro hrr ob- obb obc obd obe obf obg obh obo obr oc- ocb occ ocd ocf ocg och oco ocr odb odc odd ode odf odg odh odo odr oeb oec oed oee oef oeg oeh oeo oer of- ofb ofc ofd ofe off ofg ofo ofr ogc ogd oge ogf ogg ogh ogo ohc ohd ohe ohf ohg ohh oho ohr oo- oob ooc ood oof oog ooh ooo oor or- orb orc ord ore orf org orh oro orr rbb rbc rbd rbe rbf rbg rbh rbo rbr rcb rcc rcd rce rcf rcg rch rco rcr rdb rdc rdd rde rdf rdg rdh rdo rdr re- reb rec red ree ref reg reh reo rer rfb rfc rfd rfe rff rfg rfh rfo rfr rgb rgc rgd rge rgf rgg rgh rgo rgr rh- rhb rhc rhd rhe rhf rhg rhh rho rhr rob roc rod roe rof rog roh roo ror rrb rrc rrd rrf rrg rrh rrr