-up ddd dde ddn ddp dds ddu ddx de- ded dee den dep des deu dex dnd dne dnn dnp dns dpd dpe dpn dpp dps dpu dsd dse dsn dsp dss dsu dsx dud due dun dup dus dux dxd dxn dxp dxs dxx ed- edd ede edn edp eds edu edx eed eee een eep ees eex en- end ene enn enp ens enu ep- epd epe epn epp eps epu epx es- esd ese esn esp ess esu esx eu- eud eue eun eup eus eux ex- exd exe exp exs exu exx ndd nde ndn ndp nds ndu ne- ned nee nen nep nes neu nex nne nnn nnp nns nnu npd npe npn npp nps npu nsd nse nsn nsp nss nsu nsx nud nue nun nup nus nuu nux nxd p-p pdd pde pdn pdp pds pdu pdx ped pee pen pep pes peu pex pn- pnd pne pnn pnp pns pnu pnx ppd ppe ppn ppp pps ppu ppx ps- psd pse psn psp pss psu psx pud pue pun pup pus puu pxe pxs sdd sde sdn sdp sds sdu se- sed see sen sep ses seu sex snd sne snn snp sns snu spd spe spn spp sps spu spx ss- ssd sse ssn ssp sss ssu ssx sud sue sun sup sus suu sux sxn sxs sxu udd ude udn udp uds udu udx ued uee uen uep ues un- und une unn unp uns unu unx up- upd upe upn upp ups upu upx usd use usn usp uss usu usx uue uun uus uuu uxu xde xds xed xee xen xep xes xeu xex xns xnu xpd xpe xpn xpp xps xsp xss xue xun xup xus xxp xxx