-er ddd dde ddf ddg ddi ddn ddo ddr ddx de- ded dee def deg dei den deo der dex dfd dfe dff dfg dfi dfn dfo dfr dfx dgd dge dgf dgg dgi dgn dgr di- did die dif dig dii din dio dir dix dnd dne dnf dng dni dnn dno dnr dod doe dof dog doi don doo dor dox drd dre drg dri drn dro drr drx dxd dxi dxn dxo dxr dxx ed- edd ede edf edg edi edn edo edr edx eed eee eef eeg een eeo eer eex ef- efd efe eff efg efi efo efr efx egd ege egf egg egi egn ego egr egx eid eie eif eig eii ein eio eir eix en- end ene enf eng eni enn eno enr eo- eod eoe eof eog eoi eon eoo eor erd ere erf erg eri ern ero err ex- exd exe exi exo exr exx fdd fde fdf fdg fdi fdn fdo fdr fdx fed fee fef feg fei fen feo fer fex ffd ffe fff ffg ffi ffn ffo ffr ffx fgd fge fgf fgg fgi fgn fgr fid fie fif fig fii fin fir fix fnd fne fnf fng fni fnn fnr fnx foe fof fog foi fon foo for fox frd fre frf frg fri frn fro frr fxe fxg fxi fxr fxx g-d gdd gde gdf gdi gdn gdo gdr gdx ge- ged gee gef geg gei gen geo ger gex gfd gfe gff gfi gfo gfr gfx ggd ggg ggi ggn ggo ggr gid gie gif gig gii gin gio gir gnd gne gnf gni gnn gno gnr god goe gof gog goi gon goo gor gox grd gre grf grg gri grn gro grr grx gxf i-d i-f idd ide idf idg idi idn ido idr idx ie- ied iee ief ieg iei ien ier iex ifd ife iff ifg ifi ifn ifo ifr ifx igd ige igf igg igi ign igo igr iid iie iif iii iin iio iir iix in- ind ine inf ing ini inn ino inr inx io- iod ioe iof iog ioi ion ioo ior ir- ird ire irf irg iri irn iro irr irx ixe ixi ixn n-i ndd nde ndf ndg ndi ndn ndo ndr ne- ned nee nef neg nei nen neo ner nex nfd nfe nff nfi nfn nfo nfr ngd nge ngf ngg ngi ngn ngo nid nie nif nig nii nin nio nir nix nne nnf nng nni nnn nno no- nod noe nof nog noi non noo nor nox nrd nre nrf nrg nri nrn nro nrr nrx nxd o-i odd ode odf odg odi odn odo odr oed oee oef oeg oei oen oeo oer oex of- ofd ofe off ofg ofi ofn ofo ofr ofx ogd oge ogf ogg ogi ogn ogo ogx oid oie oif oii oin oio oir on- ond one onf ong oni onn ono onr onx oo- ood oof oog ooi oon ooo oor oox or- ord ore orf org ori orn oro orr orx ox- oxf oxi oxn oxo oxx rdd rde rdf rdg rdi rdn rdo rdr rdx re- red ree ref reg rei ren reo rer rex rfd rfe rff rfg rfi rfn rfo rfr rgd rge rgf rgg rgi rgn rgo rgr rgx rid rie rif rig rii rin rio rir rix rnd rng rni rnn rno rnr rod roe rof rog roi ron roo ror rox rrd rrf rrg rri rrn rrr rxr xde xdf xdi xdr xed xee xeg xen xer xex xfe xfn xfx xge xgi xie xii xin xio xix xno xod xof xog xoi xon xoo xor xox xrd xrf xrx xxi xxo xxx