-er -up ddd dde ddi ddn ddp ddr ddu ddx de- ded dee dei den dep der deu dex di- did die dii din dip dir diu dix dnd dne dni dnn dnp dnr dpd dpe dpi dpn dpp dpr dpu drd dre dri drn drp drr dru drx dud due dui dun dup dur dux dxd dxi dxn dxp dxr dxx ed- edd ede edi edn edp edr edu edx eed eee een eep eer eex eid eie eii ein eip eir eiu eix en- end ene eni enn enp enr enu ep- epd epe epi epn epp epr epu epx erd ere eri ern erp err eru eu- eud eue eui eun eup eur eux ex- exd exe exi exp exr exu exx i-d idd ide idi idn idp idr idu idx ie- ied iee iei ien iep ier iex iid iie iii iin iip iir iiu iix in- ind ine ini inn inp inr inu inx ipd ipe ipi ipn ipp ipr ipu ipx ir- ird ire iri irn irp irr iru irx iu- iud iue iui iup iur ixe ixi ixn n-i ndd nde ndi ndn ndp ndr ndu ne- ned nee nei nen nep ner neu nex nid nie nii nin nip nir niu nix nne nni nnn nnp nnu npd npe npi npn npp npr npu nrd nre nri nrn nrp nrr nru nrx nud nue nui nun nup nur nuu nux nxd p-p pdd pde pdi pdn pdp pdr pdu pdx ped pee pei pen pep per peu pex pid pie pii pin pip pir piu pix pn- pnd pne pni pnn pnp pnr pnu pnx ppd ppe ppi ppn ppp ppr ppu ppx prd pre pri prn prp prr pru prx pud pue pui pun pup pur puu pxe pxr rdd rde rdi rdn rdp rdr rdu rdx re- red ree rei ren rep rer reu rex rid rie rii rin rip rir rix rnd rni rnn rnp rnr rnu rpd rpe rpi rpn rpp rpr rpu rpx rrd rri rrn rrp rrr rru rud rue rui run rup rur ruu rux rxp rxr udd ude udi udn udp udr udu udx ued uee uei uen uep uer uid uie uii uin uip uir uiu un- und une uni unn unp unr unu unx up- upd upe upi upn upp upr upu upx ur- urd ure uri urn urp urr uru urx uue uun uur uuu uxr uxu xde xdi xdr xed xee xen xep xer xeu xex xie xii xin xiu xix xnu xpd xpe xpn xpp xrd xrx xue xui xun xup xxi xxp xxx