-er eee eef eeg eel een eer eex ef- efe eff efg efi efl efr efx ege egf egg egi egl egn egr egu egx eie eif eig eii eil ein eir eiu eix ele elf elg eli ell eln elr elu elx en- ene enf eng eni enl enn enr enu ere erf erg eri erl ern err eru eu- eue euf eug eui eul eun eur eux ex- exe exi exl exr exu exx fee fef feg fei fel fen fer feu fex ffe fff ffg ffi ffl ffn ffr ffu ffx fge fgf fgg fgi fgl fgn fgr fie fif fig fii fil fin fir fiu fix fle flf flg fli fll fln flr flu flx fne fnf fng fni fnl fnn fnr fnu fnx fre frf frg fri frl frn frr fru fue fuf fug fui ful fun fur fuu fux fxe fxg fxi fxr fxu fxx ge- gee gef geg gei gel gen ger geu gex gfe gff gfi gfl gfr gfx ggg ggi ggn ggr ggu gie gif gig gii gil gin gir giu gle glf glg gli gll gln glr glu glx gne gnf gni gnl gnn gnr gnu gre grf grg gri grl grn grr gru grx gu- gue guf gug gui gul gun gur guu gxf gxl i-f ie- iee ief ieg iei iel ien ier iex ife iff ifg ifi ifl ifn ifr ifu ifx ige igf igg igi igl ign igr igu iie iif iii iil iin iir iiu iix il- ile ilf ilg ili ill iln ilr ilu ilx in- ine inf ing ini inl inn inr inu inx ir- ire irf irg iri irl irn irr iru irx iu- iue iug iui iur ixe ixi ixl ixn lee lef leg lei lel len ler leu lex lfe lff lfg lfi lfl lfn lfr lfu lfx lge lgf lgg lgi lgl lgn lgr lgu lie lif lig lii lil lin lir liu lix lle llf llg lli lll lln llr llu lne lng lni lnl lnn lnr lnu lrf lrg lri lrn lrr lru lue luf lug lui lul lun lur luu lux lxi lxr lxx n-i ne- nee nef neg nei nel nen ner neu nex nfe nff nfi nfl nfn nfr nfu nge ngf ngg ngi ngl ngn ngu nie nif nig nii nil nin nir niu nix nle nlf nlg nli nll nln nlr nlu nlx nne nnf nng nni nnl nnn nnu nre nrf nrg nri nrl nrn nrr nru nrx nue nug nui nul nun nur nuu nux nxl re- ree ref reg rei rel ren rer reu rex rfe rff rfg rfi rfl rfn rfr rfu rge rgf rgg rgi rgn rgr rgx rie rif rig rii ril rin rir rix rle rlf rlg rli rll rln rlr rlu rng rni rnn rnr rnu rrf rrg rri rrl rrn rrr rru rue ruf rug rui run rur ruu rux rxr uee uef ueg uei uel uen uer ufe uff ufg ufi ufl ufn ufr ufu ufx uge ugf ugg ugi ugl ugn ugr ugu ugx uie uif uig uii uil uin uir uiu ule ulf ulg uli ull uln ulr ulu un- une unf ung uni unl unn unr unu unx ur- ure urf urg uri url urn urr uru urx uue uug uun uur uuu uxf uxr uxu xee xeg xel xen xer xeu xex xfe xfl xfn xfx xge xgi xgl xie xii xin xiu xix xlf xlg xli xlr xnu xrf xrx xue xui xul xun xxi xxl xxx