-er -up eee eef eel een eep eer ees eet ef- efe eff efl efp efr efs eft ele elf ell eln elp elr els elt elu en- ene enf enl enn enp enr ens ent enu ep- epe epf epl epn epp epr eps ept epu ere erf erl ern erp err ers ert eru es- ese esf esl esn esp esr ess est esu ete etf etl etn etp etr ets ett etu eu- eue euf eul eun eup eur eus eut fee fef fel fen fep fer fes fet feu ffe fff ffl ffn ffp ffr ffs fft ffu fle flf fll fln flp flr fls flt flu fne fnf fnl fnn fnp fnr fns fnt fnu fpe fpl fpn fpp fpr fps fpt fpu fre frf frl frn frp frr frs frt fru fse fsf fsl fsn fsp fsr fss fst fsu fte ftf ftl ftn ftp ftr fts ftt ftu fue fuf ful fun fup fur fus fut fuu l-p lee lef lel len lep ler les let leu lfe lff lfl lfn lfp lfr lfs lft lfu lle llf lll lln llp llr lls llt llu lne lnl lnn lnp lnr lns lnt lnu lpe lpf lpl lpn lpp lpr lps lpt lpu lrf lrn lrp lrr lrs lrt lru lse lsf lsl lsn lsp lsr lss lst lsu lte ltf ltl ltp ltr lts ltt ltu lue luf lul lun lup lur lus lut luu ne- nee nef nel nen nep ner nes net neu nfe nff nfl nfn nfp nfr nfs nft nfu nle nlf nll nln nlp nlr nls nlt nlu nne nnf nnl nnn nnp nns nnt nnu npe npf npl npn npp npr nps npt npu nre nrf nrl nrn nrp nrr nrs nrt nru nse nsf nsl nsn nsp nsr nss nst nsu nte ntf ntn ntp ntr nts ntt ntu nue nul nun nup nur nus nut nuu p-p pee pef pel pen pep per pes pet peu pfe pff pfl pfn pfp pfr pfs pft pfu ple plf pll pln plp plr pls plt plu pn- pne pnf pnl pnn pnp pnr pns pnt pnu ppe ppf ppl ppn ppp ppr pps ppt ppu pre prf prl prn prp prr prs prt pru ps- pse psf psl psn psp psr pss pst psu pt- pte ptf ptl ptn ptp ptr pts ptt ptu pue puf pul pun pup pur pus put puu re- ree ref rel ren rep rer res ret reu rfe rff rfl rfn rfp rfr rfs rft rfu rle rlf rll rln rlp rlr rls rlt rlu rnn rnp rnr rns rnt rnu rpe rpf rpl rpn rpp rpr rps rpt rpu rrf rrl rrn rrp rrr rrs rrt rru rse rsf rsl rsn rsp rsr rss rst rsu rte rtf rtl rtn rtp rtr rts rtt rtu rue ruf run rup rur rus rut ruu se- see sef sel sen sep ser ses set seu sfe sff sfl sfn sfp sfr sfs sft sfu sle slf sll sln slp slr sls slt slu sne snf snl snn snp snr sns snt snu spe spf spl spn spp spr sps spt spu sr- sre srf srl srn srp srr srs srt ss- sse ssf ssl ssn ssp ssr sss sst ssu ste stf stl stn stp str sts stt stu sue suf sul sun sup sur sus sut suu te- tee tef tel ten tep ter tes tet teu tfe tff tfl tfn tfp tfr tfs tft tfu tle tlf tll tln tlp tlr tls tlt tlu tne tnf tnl tnn tnp tnr tns tnt tpe tpf tpl tpn tpp tpr tps tpt tpu tre trf trl trn trp trr trs trt tru tse tsf tsl tsn tsp tsr tss tst tsu tte ttf ttl ttn ttp ttr tts ttt ttu tue tuf tul tun tup tur tus tut tuu uee uef uel uen uep uer ues uet ufe uff ufl ufn ufp ufr ufs uft ufu ule ulf ull uln ulp ulr uls ult ulu un- une unf unl unn unp unr uns unt unu up- upe upf upn upp upr ups upt upu ur- ure urf url urn urp urr urs urt uru use usf usl usn usp usr uss ust usu ute utf utl utn utp utr uts utt utu uue uun uur uus uut uuu