-er eee eef een eeo eep eer eet ef- efe eff efo efp efr eft en- ene enf enn eno enp enr ent eo- eoe eof eon eoo eop eor eot ep- epe epf epn epo epp epr ept ere erf ern ero erp err ert ete etf etn eto etp etr ett fee fef fen feo fep fer fet ffe fff ffn ffo ffp ffr fft fne fnf fnn fnp fnr fnt foe fof fon foo fop for fot fpe fpn fpo fpp fpr fpt fre frf frn fro frp frr frt fte ftf ftn fto ftp ftr ftt ne- nee nef nen neo nep ner net nfe nff nfn nfo nfp nfr nft nne nnf nnn nno nnp nnt no- noe nof non noo nop nor not npe npf npn npo npp npr npt nre nrf nrn nro nrp nrr nrt nte ntf ntn nto ntp ntr ntt oee oef oen oeo oep oer oet of- ofe off ofn ofo ofp ofr oft on- one onf onn ono onp onr ont oo- oof oon ooo oop oor oot op- ope opf opn opo opp opr opt or- ore orf orn oro orp orr ort ot- ote otf otn oto otp otr ott p-p pee pef pen peo pep per pet pfe pff pfn pfo pfp pfr pft pn- pne pnf pnn pno pnp pnr pnt poe pof pon poo pop por pot ppe ppf ppn ppo ppp ppr ppt pre prf prn pro prp prr prt pt- pte ptf ptn pto ptp ptr ptt re- ree ref ren reo rep rer ret rfe rff rfn rfo rfp rfr rft rnn rno rnp rnr rnt roe rof ron roo rop ror rot rpe rpf rpn rpo rpp rpr rpt rrf rrn rrp rrr rrt rte rtf rtn rto rtp rtr rtt te- tee tef ten teo tep ter tet tfe tff tfn tfo tfp tfr tft tne tnf tnn tno tnp tnr tnt to- toe tof ton too top tor tot tpe tpf tpn tpo tpp tpr tpt tre trf trn tro trp trr trt tte ttf ttn tto ttp ttr ttt