-er c-- ccc ccd cce ccf ccg cch cco ccr ccx cdc cdd cde cdf cdg cdh cdo cdr cdx ce- cec ced cee cef ceg ceh ceo cer cex cfc cfd cfe cff cfg cfh cfo cfr cfx cgc cgd cge cgg cgh cgo cgr ch- chc chd che chf chg chh cho chr chx co- coc cod coe cof cog coh coo cor cox crc crd cre crf crg crh cro crr crx cxc cxf cxh cxo cxr cxx dcc dcd dce dcf dcg dco dcr dcx ddc ddd dde ddf ddg ddh ddo ddr ddx de- dec ded dee def deg deh deo der dex dfc dfd dfe dff dfg dfh dfo dfr dfx dgc dgd dge dgf dgg dgh dgr dh- dhc dhd dhe dhf dhh dho dhr doc dod doe dof dog doh doo dor dox drc drd dre drg dro drr drx dxc dxd dxo dxr dxx ec- ecc ecd ece ecf ecg ech eco ecr ecx ed- edc edd ede edf edg edh edo edr edx eec eed eee eef eeg eeo eer eex ef- efc efd efe eff efg efh efo efr efx egc egd ege egf egg egh ego egr egx ehc ehd ehe ehf ehg ehh eho ehr eo- eoc eod eoe eof eog eoh eoo eor erc erd ere erf erg erh ero err ex- exc exd exe exh exo exr exx fcc fcd fce fcf fcg fco fcr fcx fdc fdd fde fdf fdg fdh fdo fdr fdx fec fed fee fef feg feh feo fer fex ffc ffd ffe fff ffg ffh ffo ffr ffx fgc fgd fge fgf fgg fgh fgr fhc fhe fhf fhg fhh fho fhr foc foe fof fog foh foo for fox frc frd fre frf frg frh fro frr fxe fxg fxr fxx g-d gcc gcd gce gcf gcg gch gco gcr gdc gdd gde gdf gdh gdo gdr gdx ge- gec ged gee gef geg geh geo ger gex gfc gfd gfe gff gfh gfo gfr gfx ggc ggd ggg ggh ggo ggr ghc ghd ghe ghg ghh gho ghr goc god goe gof gog goh goo gor gox grc grd gre grf grg grh gro grr grx gxf hcc hcd hce hcf hcg hch hco hcr hdc hdd hde hdf hdg hdh hdo hdr hdx he- hec hed hee hef heg heh heo her hex hfc hfd hfe hff hfg hfh hfo hfr hgc hge hgf hgg hgh hgo hgr hhc hhd hhe hhf hhg hhh hho hhr hoc hod hoe hof hog hoh hoo hor hox hr- hrc hrd hre hrf hrg hrh hro hrr hxc hxd oc- occ ocd ocf ocg och oco ocr ocx odc odd ode odf odg odh odo odr oec oed oee oef oeg oeh oeo oer oex of- ofc ofd ofe off ofg ofo ofr ofx ogc ogd oge ogf ogg ogh ogo ogx ohc ohd ohe ohf ohg ohh oho ohr oo- ooc ood oof oog ooh ooo oor oox or- orc ord ore orf org orh oro orr orx ox- oxc oxf oxo oxx rcc rcd rce rcf rcg rch rco rcr rcx rdc rdd rde rdf rdg rdh rdo rdr rdx re- rec red ree ref reg reh reo rer rex rfc rfd rfe rff rfg rfh rfo rfr rgc rgd rge rgf rgg rgh rgo rgr rgx rh- rhc rhd rhe rhf rhg rhh rho rhr roc rod roe rof rog roh roo ror rox rrc rrd rrf rrg rrh rrr rxr xcd xcf xch xcr xcx xdc xde xdf xdh xdr xed xee xeg xer xex xfe xfh xfx xge xhd xoc xod xof xog xoo xor xox xrc xrd xrf xrx xxo xxx