eee eef eem een eeo eet ef- efe eff efm efo eft em- eme emf emm emn emo emt en- ene enf enm enn eno ent eo- eoe eof eom eon eoo eot ete etf etm etn eto ett fee fef fem fen feo fet ffe fff ffm ffn ffo fft fme fmf fmm fmn fmo fmt fne fnf fnm fnn fnt foe fof fom fon foo fot fte ftf ftm ftn fto ftt m-f m-o mee mef mem men meo met mfe mff mfm mfn mfo mft mme mmf mmm mmn mmo mmt mne mnf mnm mnn mno mnt moe mof mom mon moo mot mte mtf mtm mtn mto mtt ne- nee nef nem nen neo net nfe nff nfn nfo nft nme nmm nmn nmo nmt nne nnf nnm nnn nno nnt no- noe nof nom non noo not nte ntf ntm ntn nto ntt oee oef oem oen oeo oet of- ofe off ofm ofn ofo oft om- ome omf omm omn omo omt on- one onf onn ono ont oo- oof oom oon ooo oot ot- ote otf otm otn oto ott te- tee tef tem ten teo tet tfe tff tfm tfn tfo tft tme tmf tmm tmn tmo tmt tne tnf tnm tnn tno tnt to- toe tof tom ton too tot tte ttf ttm ttn tto ttt