-er -up ddd dde ddn ddp ddr dds ddu ddx de- ded dee den dep der des deu dex dnd dne dnn dnp dnr dns dpd dpe dpn dpp dpr dps dpu drd dre drn drp drr drs dru drx dsd dse dsn dsp dsr dss dsu dsx dud due dun dup dur dus dux dxd dxn dxp dxr dxs dxx ed- edd ede edn edp edr eds edu edx eed eee een eep eer ees eex en- end ene enn enp enr ens enu ep- epd epe epn epp epr eps epu epx erd ere ern erp err ers eru es- esd ese esn esp esr ess esu esx eu- eud eue eun eup eur eus eux ex- exd exe exp exr exs exu exx ndd nde ndn ndp ndr nds ndu ne- ned nee nen nep ner nes neu nex nne nnn nnp nns nnu npd npe npn npp npr nps npu nrd nre nrn nrp nrr nrs nru nrx nsd nse nsn nsp nsr nss nsu nsx nud nue nun nup nur nus nuu nux nxd p-p pdd pde pdn pdp pdr pds pdu pdx ped pee pen pep per pes peu pex pn- pnd pne pnn pnp pnr pns pnu pnx ppd ppe ppn ppp ppr pps ppu ppx prd pre prn prp prr prs pru prx ps- psd pse psn psp psr pss psu psx pud pue pun pup pur pus puu pxe pxr pxs rdd rde rdn rdp rdr rds rdu rdx re- red ree ren rep rer res reu rex rnd rnn rnp rnr rns rnu rpd rpe rpn rpp rpr rps rpu rpx rrd rrn rrp rrr rrs rru rsd rse rsn rsp rsr rss rsu rsx rud rue run rup rur rus ruu rux rxp rxr rxs sdd sde sdn sdp sdr sds sdu se- sed see sen sep ser ses seu sex snd sne snn snp snr sns snu spd spe spn spp spr sps spu spx sr- srd sre srn srp srr srs srx ss- ssd sse ssn ssp ssr sss ssu ssx sud sue sun sup sur sus suu sux sxn sxs sxu udd ude udn udp udr uds udu udx ued uee uen uep uer ues un- und une unn unp unr uns unu unx up- upd upe upn upp upr ups upu upx ur- urd ure urn urp urr urs uru urx usd use usn usp usr uss usu usx uue uun uur uus uuu uxr uxu xde xdr xds xed xee xen xep xer xes xeu xex xns xnu xpd xpe xpn xpp xps xrd xrx xsp xss xue xun xup xus xxp xxx