-er eee eef eel eem een eer ef- efe eff efl efm efr ele elf ell elm eln elr elu em- eme emf eml emm emn emr emu en- ene enf enl enm enn enr enu ere erf erl erm ern err eru eu- eue euf eul eun eur fee fef fel fem fen fer feu ffe fff ffl ffm ffn ffr ffu fle flf fll flm fln flr flu fme fmf fml fmm fmn fmr fmu fne fnf fnl fnm fnn fnr fnu fre frf frl frm frn frr fru fue fuf ful fum fun fur fuu lee lef lel lem len ler leu lfe lff lfl lfm lfn lfr lfu lle llf lll llm lln llr llu lme lmf lml lmm lmn lmr lmu lne lnl lnm lnn lnr lnu lrf lrm lrn lrr lru lue luf lul lum lun lur luu m-f m-r mee mef mel mem men mer meu mfe mff mfl mfm mfn mfr mfu mle mlf mll mlm mln mlr mlu mme mmf mml mmm mmn mmr mmu mne mnf mnl mnm mnn mnr mnu mre mrf mrl mrm mrn mrr mru mue muf mul mum mun mur muu ne- nee nef nel nem nen ner neu nfe nff nfl nfn nfr nfu nle nlf nll nlm nln nlr nlu nme nml nmm nmn nmr nmu nne nnf nnl nnm nnn nnu nre nrf nrl nrm nrn nrr nru nue nul num nun nur nuu re- ree ref rel rem ren rer reu rfe rff rfl rfm rfn rfr rfu rle rlf rll rlm rln rlr rlu rme rmf rml rmm rmn rmr rnm rnn rnr rnu rrf rrl rrm rrn rrr rru rue ruf rum run rur ruu uee uef uel uem uen uer ufe uff ufl ufm ufn ufr ufu ule ulf ull ulm uln ulr ulu um- ume umf uml umm umn umr umu un- une unf unl unm unn unr unu ur- ure urf url urm urn urr uru uue uum uun uur uuu