-er -up ddd dde ddf ddi ddn ddp ddr dds ddu de- ded dee def dei den dep der des deu dfd dfe dff dfi dfn dfp dfr dfs dfu di- did die dif dii din dip dir dis diu dnd dne dnf dni dnn dnp dnr dns dpd dpe dpf dpi dpn dpp dpr dps dpu drd dre dri drn drp drr drs dru dsd dse dsf dsi dsn dsp dsr dss dsu dud due duf dui dun dup dur dus ed- edd ede edf edi edn edp edr eds edu eed eee eef een eep eer ees ef- efd efe eff efi efp efr efs eid eie eif eii ein eip eir eis eiu en- end ene enf eni enn enp enr ens enu ep- epd epe epf epi epn epp epr eps epu erd ere erf eri ern erp err ers eru es- esd ese esf esi esn esp esr ess esu eu- eud eue euf eui eun eup eur eus fdd fde fdf fdi fdn fdp fdr fds fdu fed fee fef fei fen fep fer fes feu ffd ffe fff ffi ffn ffp ffr ffs ffu fid fie fif fii fin fip fir fis fiu fnd fne fnf fni fnn fnp fnr fns fnu fpd fpe fpi fpn fpp fpr fps fpu frd fre frf fri frn frp frr frs fru fsd fse fsf fsi fsn fsp fsr fss fsu fud fue fuf fui fun fup fur fus fuu i-d i-f idd ide idf idi idn idp idr ids idu ie- ied iee ief iei ien iep ier ies ifd ife iff ifi ifn ifp ifr ifs ifu iid iie iif iii iin iip iir iis iiu in- ind ine inf ini inn inp inr ins inu ipd ipe ipf ipi ipn ipp ipr ips ipu ir- ird ire irf iri irn irp irr irs iru is- isd ise isf isi isn isp isr iss isu iu- iud iue iui iup iur ius n-i ndd nde ndf ndi ndn ndp ndr nds ndu ne- ned nee nef nei nen nep ner nes neu nfd nfe nff nfi nfn nfp nfr nfs nfu nid nie nif nii nin nip nir nis niu nne nnf nni nnn nnp nns nnu npd npe npf npi npn npp npr nps npu nrd nre nrf nri nrn nrp nrr nrs nru nsd nse nsf nsi nsn nsp nsr nss nsu nud nue nui nun nup nur nus nuu p-p pdd pde pdf pdi pdn pdp pdr pds pdu ped pee pef pei pen pep per pes peu pfd pfe pff pfi pfn pfp pfr pfs pfu pid pie pif pii pin pip pir pis piu pn- pnd pne pnf pni pnn pnp pnr pns pnu ppd ppe ppf ppi ppn ppp ppr pps ppu prd pre prf pri prn prp prr prs pru ps- psd pse psf psi psn psp psr pss psu pud pue puf pui pun pup pur pus puu rdd rde rdf rdi rdn rdp rdr rds rdu re- red ree ref rei ren rep rer res reu rfd rfe rff rfi rfn rfp rfr rfs rfu rid rie rif rii rin rip rir ris rnd rni rnn rnp rnr rns rnu rpd rpe rpf rpi rpn rpp rpr rps rpu rrd rrf rri rrn rrp rrr rrs rru rsd rse rsf rsi rsn rsp rsr rss rsu rud rue ruf rui run rup rur rus ruu sdd sde sdf sdi sdn sdp sdr sds sdu se- sed see sef sei sen sep ser ses seu sfd sfe sff sfi sfn sfp sfr sfs sfu sid sie sif sii sin sip sir sis siu snd sne snf sni snn snp snr sns snu spd spe spf spi spn spp spr sps spu sr- srd sre srf sri srn srp srr srs ss- ssd sse ssf ssi ssn ssp ssr sss ssu sud sue suf sui sun sup sur sus suu udd ude udf udi udn udp udr uds udu ued uee uef uei uen uep uer ues ufd ufe uff ufi ufn ufp ufr ufs ufu uid uie uif uii uin uip uir uis uiu un- und une unf uni unn unp unr uns unu up- upd upe upf upi upn upp upr ups upu ur- urd ure urf uri urn urp urr urs uru usd use usf usi usn usp usr uss usu uue uun uur uus uuu