-er -up eee eel een eep eer eet eex ele ell eln elp elr elt elu elx en- ene enl enn enp enr ent enu ep- epe epl epn epp epr ept epu epx ere erl ern erp err ert eru ete etl etn etp etr ett etu etx eu- eue eul eun eup eur eut eux ex- exe exl exp exr ext exu exx l-p lee lel len lep ler let leu lex lle lll lln llp llr llt llu lne lnl lnn lnp lnr lnt lnu lpe lpl lpn lpp lpr lpt lpu lpx lrn lrp lrr lrt lru lte ltl ltp ltr ltt ltu ltx lue lul lun lup lur lut luu lux lxr lxx ne- nee nel nen nep ner net neu nex nle nll nln nlp nlr nlt nlu nlx nne nnl nnn nnp nnt nnu npe npl npn npp npr npt npu nre nrl nrn nrp nrr nrt nru nrx nte ntn ntp ntr ntt ntu ntx nue nul nun nup nur nut nuu nux nxl nxt p-p pee pel pen pep per pet peu pex ple pll pln plp plr plt plu plx pn- pne pnl pnn pnp pnr pnt pnu pnx ppe ppl ppn ppp ppr ppt ppu ppx pre prl prn prp prr prt pru prx pt- pte ptl ptn ptp ptr ptt ptu ptx pue pul pun pup pur put puu pxe pxl pxr pxt re- ree rel ren rep rer ret reu rex rle rll rln rlp rlr rlt rlu rnn rnp rnr rnt rnu rpe rpl rpn rpp rpr rpt rpu rpx rrl rrn rrp rrr rrt rru rte rtl rtn rtp rtr rtt rtu rtx rue run rup rur rut ruu rux rxp rxr t-x te- tee tel ten tep ter tet teu tex tle tll tln tlp tlr tlt tlu tlx tne tnl tnn tnp tnr tnt tnx tpe tpl tpn tpp tpr tpt tpu tpx tre trl trn trp trr trt tru trx tte ttl ttn ttp ttr ttt ttu ttx tue tul tun tup tur tut tuu tux txe txl txn txt txu uee uel uen uep uer uet ule ull uln ulp ulr ult ulu un- une unl unn unp unr unt unu unx up- upe upn upp upr upt upu upx ur- ure url urn urp urr urt uru urx ute utl utn utp utr utt utu utx uue uun uur uut uuu uxr uxt uxu xee xel xen xep xer xet xeu xex xlr xlt xnu xpe xpl xpn xpp xpt xrt xrx xtp xtr xtx xue xul xun xup xxl xxp xxx