-er -up eee eel eep eer ees eet ele ell elp elr els elt elu ep- epe epl epp epr eps ept epu ere erl erp err ers ert eru es- ese esl esp esr ess est esu ete etl etp etr ets ett etu eu- eue eul eup eur eus eut l-p lee lel lep ler les let leu lle lll llp llr lls llt llu lpe lpl lpp lpr lps lpt lpu lrp lrr lrs lrt lru lse lsl lsp lsr lss lst lsu lte ltl ltp ltr lts ltt ltu lue lul lup lur lus lut luu p-p pee pel pep per pes pet peu ple pll plp plr pls plt plu ppe ppl ppp ppr pps ppt ppu pre prl prp prr prs prt pru ps- pse psl psp psr pss pst psu pt- pte ptl ptp ptr pts ptt ptu pue pul pup pur pus put puu re- ree rel rep rer res ret reu rle rll rlp rlr rls rlt rlu rpe rpl rpp rpr rps rpt rpu rrl rrp rrr rrs rrt rru rse rsl rsp rsr rss rst rsu rte rtl rtp rtr rts rtt rtu rue rup rur rus rut ruu se- see sel sep ser ses set seu sle sll slp slr sls slt slu spe spl spp spr sps spt spu sr- sre srl srp srr srs srt ss- sse ssl ssp ssr sss sst ssu ste stl stp str sts stt stu sue sul sup sur sus sut suu te- tee tel tep ter tes tet teu tle tll tlp tlr tls tlt tlu tpe tpl tpp tpr tps tpt tpu tre trl trp trr trs trt tru tse tsl tsp tsr tss tst tsu tte ttl ttp ttr tts ttt ttu tue tul tup tur tus tut tuu uee uel uep uer ues uet ule ull ulp ulr uls ult ulu up- upe upp upr ups upt upu ur- ure url urp urr urs urt uru use usl usp usr uss ust usu ute utl utp utr uts utt utu uue uur uus uut uuu