-er -up ddd dde ddn ddo ddp ddr dds ddt ddu de- ded dee den deo dep der des det deu dnd dne dnn dno dnp dnr dns dnt dod doe don doo dop dor dos dot dou dpd dpe dpn dpo dpp dpr dps dpt dpu drd dre drn dro drp drr drs drt dru dsd dse dsn dso dsp dsr dss dst dsu dtd dte dtn dto dtp dtr dts dtt dtu dud due dun duo dup dur dus dut ed- edd ede edn edo edp edr eds edt edu eed eee een eeo eep eer ees eet en- end ene enn eno enp enr ens ent enu eo- eod eoe eon eoo eop eor eos eot eou ep- epd epe epn epo epp epr eps ept epu erd ere ern ero erp err ers ert eru es- esd ese esn eso esp esr ess est esu etd ete etn eto etp etr ets ett etu eu- eud eue eun eup eur eus eut ndd nde ndn ndo ndp ndr nds ndt ndu ne- ned nee nen neo nep ner nes net neu nne nnn nno nnp nns nnt nnu no- nod noe non noo nop nor nos not nou npd npe npn npo npp npr nps npt npu nrd nre nrn nro nrp nrr nrs nrt nru nsd nse nsn nso nsp nsr nss nst nsu ntd nte ntn nto ntp ntr nts ntt ntu nud nue nun nuo nup nur nus nut nuu odd ode odn odo odp odr ods odt odu oed oee oen oeo oep oer oes oet on- ond one onn ono onp onr ons ont onu oo- ood oon ooo oop oor oos oot op- opd ope opn opo opp opr ops opt or- ord ore orn oro orp orr ors ort oru os- osd ose osn oso osp osr oss ost osu ot- otd ote otn oto otp otr ots ott otu ou- oud oue oun ouo oup our ous out p-p pdd pde pdn pdo pdp pdr pds pdt pdu ped pee pen peo pep per pes pet peu pn- pnd pne pnn pno pnp pnr pns pnt pnu pod poe pon poo pop por pos pot pou ppd ppe ppn ppo ppp ppr pps ppt ppu prd pre prn pro prp prr prs prt pru ps- psd pse psn pso psp psr pss pst psu pt- ptd pte ptn pto ptp ptr pts ptt ptu pud pue pun pup pur pus put puu rdd rde rdn rdo rdp rdr rds rdt rdu re- red ree ren reo rep rer res ret reu rnd rnn rno rnp rnr rns rnt rnu rod roe ron roo rop ror ros rot rou rpd rpe rpn rpo rpp rpr rps rpt rpu rrd rrn rrp rrr rrs rrt rru rsd rse rsn rso rsp rsr rss rst rsu rtd rte rtn rto rtp rtr rts rtt rtu rud rue run ruo rup rur rus rut ruu sdd sde sdn sdo sdp sdr sds sdt sdu se- sed see sen seo sep ser ses set seu snd sne snn sno snp snr sns snt snu sod soe son soo sop sor sos sot sou spd spe spn spo spp spr sps spt spu sr- srd sre srn sro srp srr srs srt ss- ssd sse ssn sso ssp ssr sss sst ssu std ste stn sto stp str sts stt stu sud sue sun suo sup sur sus sut suu tdd tde tdn tdo tdp tdr tds tdt tdu te- ted tee ten teo tep ter tes tet teu tnd tne tnn tno tnp tnr tns tnt to- tod toe ton too top tor tos tot tou tpd tpe tpn tpo tpp tpr tps tpt tpu trd tre trn tro trp trr trs trt tru tsd tse tsn tso tsp tsr tss tst tsu ttd tte ttn tto ttp ttr tts ttt ttu tud tue tun tuo tup tur tus tut tuu udd ude udn udo udp udr uds udt udu ued uee uen uep uer ues uet un- und une unn uno unp unr uns unt unu uod uoe uon uoo uop uor uos uot up- upd upe upn upo upp upr ups upt upu ur- urd ure urn uro urp urr urs urt uru usd use usn uso usp usr uss ust usu utd ute utn uto utp utr uts utt utu uue uun uur uus uut uuu