-er -up ddd dde ddi ddn ddp ddr dds ddu de- ded dee dei den dep der des deu di- did die dii din dip dir dis diu dnd dne dni dnn dnp dnr dns dpd dpe dpi dpn dpp dpr dps dpu drd dre dri drn drp drr drs dru dsd dse dsi dsn dsp dsr dss dsu dud due dui dun dup dur dus ed- edd ede edi edn edp edr eds edu eed eee een eep eer ees eid eie eii ein eip eir eis eiu en- end ene eni enn enp enr ens enu ep- epd epe epi epn epp epr eps epu erd ere eri ern erp err ers eru es- esd ese esi esn esp esr ess esu eu- eud eue eui eun eup eur eus i-d idd ide idi idn idp idr ids idu ie- ied iee iei ien iep ier ies iid iie iii iin iip iir iis iiu in- ind ine ini inn inp inr ins inu ipd ipe ipi ipn ipp ipr ips ipu ir- ird ire iri irn irp irr irs iru is- isd ise isi isn isp isr iss isu iu- iud iue iui iup iur ius n-i ndd nde ndi ndn ndp ndr nds ndu ne- ned nee nei nen nep ner nes neu nid nie nii nin nip nir nis niu nne nni nnn nnp nns nnu npd npe npi npn npp npr nps npu nrd nre nri nrn nrp nrr nrs nru nsd nse nsi nsn nsp nsr nss nsu nud nue nui nun nup nur nus nuu p-p pdd pde pdi pdn pdp pdr pds pdu ped pee pei pen pep per pes peu pid pie pii pin pip pir pis piu pn- pnd pne pni pnn pnp pnr pns pnu ppd ppe ppi ppn ppp ppr pps ppu prd pre pri prn prp prr prs pru ps- psd pse psi psn psp psr pss psu pud pue pui pun pup pur pus puu rdd rde rdi rdn rdp rdr rds rdu re- red ree rei ren rep rer res reu rid rie rii rin rip rir ris rnd rni rnn rnp rnr rns rnu rpd rpe rpi rpn rpp rpr rps rpu rrd rri rrn rrp rrr rrs rru rsd rse rsi rsn rsp rsr rss rsu rud rue rui run rup rur rus ruu sdd sde sdi sdn sdp sdr sds sdu se- sed see sei sen sep ser ses seu sid sie sii sin sip sir sis siu snd sne sni snn snp snr sns snu spd spe spi spn spp spr sps spu sr- srd sre sri srn srp srr srs ss- ssd sse ssi ssn ssp ssr sss ssu sud sue sui sun sup sur sus suu udd ude udi udn udp udr uds udu ued uee uei uen uep uer ues uid uie uii uin uip uir uis uiu un- und une uni unn unp unr uns unu up- upd upe upi upn upp upr ups upu ur- urd ure uri urn urp urr urs uru usd use usi usn usp usr uss usu uue uun uur uus uuu