-er -up ddd dde ddl ddp ddr dds ddt ddu de- ded dee del dep der des det deu dl- dld dle dll dlp dlr dls dlt dlu dpd dpe dpl dpp dpr dps dpt dpu drd dre drl drp drr drs drt dru dsd dse dsl dsp dsr dss dst dsu dtd dte dtl dtp dtr dts dtt dtu dud due dul dup dur dus dut ed- edd ede edl edp edr eds edt edu eed eee eel eep eer ees eet eld ele ell elp elr els elt elu ep- epd epe epl epp epr eps ept epu erd ere erl erp err ers ert eru es- esd ese esl esp esr ess est esu etd ete etl etp etr ets ett etu eu- eud eue eul eup eur eus eut l-p ldd lde ldl ldp ldr lds ldt ldu led lee lel lep ler les let leu lld lle lll llp llr lls llt llu lpd lpe lpl lpp lpr lps lpt lpu lrd lrp lrr lrs lrt lru lsd lse lsl lsp lsr lss lst lsu ltd lte ltl ltp ltr lts ltt ltu lud lue lul lup lur lus lut luu p-p pdd pde pdl pdp pdr pds pdt pdu ped pee pel pep per pes pet peu pld ple pll plp plr pls plt plu ppd ppe ppl ppp ppr pps ppt ppu prd pre prl prp prr prs prt pru ps- psd pse psl psp psr pss pst psu pt- ptd pte ptl ptp ptr pts ptt ptu pud pue pul pup pur pus put puu rdd rde rdl rdp rdr rds rdt rdu re- red ree rel rep rer res ret reu rld rle rll rlp rlr rls rlt rlu rpd rpe rpl rpp rpr rps rpt rpu rrd rrl rrp rrr rrs rrt rru rsd rse rsl rsp rsr rss rst rsu rtd rte rtl rtp rtr rts rtt rtu rud rue rup rur rus rut ruu sdd sde sdl sdp sdr sds sdt sdu se- sed see sel sep ser ses set seu sld sle sll slp slr sls slt slu spd spe spl spp spr sps spt spu sr- srd sre srl srp srr srs srt ss- ssd sse ssl ssp ssr sss sst ssu std ste stl stp str sts stt stu sud sue sul sup sur sus sut suu tdd tde tdl tdp tdr tds tdt tdu te- ted tee tel tep ter tes tet teu tld tle tll tlp tlr tls tlt tlu tpd tpe tpl tpp tpr tps tpt tpu trd tre trl trp trr trs trt tru tsd tse tsl tsp tsr tss tst tsu ttd tte ttl ttp ttr tts ttt ttu tud tue tul tup tur tus tut tuu udd ude udl udp udr uds udt udu ued uee uel uep uer ues uet uld ule ull ulp ulr uls ult ulu up- upd upe upp upr ups upt upu ur- urd ure url urp urr urs urt uru usd use usl usp usr uss ust usu utd ute utl utp utr uts utt utu uue uur uus uut uuu