-er -up ddd dde ddf ddn ddo ddp ddr ddu ddx de- ded dee def den deo dep der deu dex dfd dfe dff dfn dfo dfp dfr dfu dfx dnd dne dnf dnn dno dnp dnr dod doe dof don doo dop dor dou dox dpd dpe dpf dpn dpo dpp dpr dpu drd dre drn dro drp drr dru drx dud due duf dun duo dup dur dux dxd dxn dxo dxp dxr dxx ed- edd ede edf edn edo edp edr edu edx eed eee eef een eeo eep eer eex ef- efd efe eff efo efp efr efx en- end ene enf enn eno enp enr enu eo- eod eoe eof eon eoo eop eor eou ep- epd epe epf epn epo epp epr epu epx erd ere erf ern ero erp err eru eu- eud eue euf eun eup eur eux ex- exd exe exo exp exr exu exx fdd fde fdf fdn fdo fdp fdr fdu fdx fed fee fef fen feo fep fer feu fex ffd ffe fff ffn ffo ffp ffr ffu ffx fnd fne fnf fnn fnp fnr fnu fnx foe fof fon foo fop for fou fox fpd fpe fpn fpo fpp fpr fpu fpx frd fre frf frn fro frp frr fru fud fue fuf fun fuo fup fur fuu fux fxe fxp fxr fxu fxx ndd nde ndf ndn ndo ndp ndr ndu ne- ned nee nef nen neo nep ner neu nex nfd nfe nff nfn nfo nfp nfr nfu nne nnf nnn nno nnp nnu no- nod noe nof non noo nop nor nou nox npd npe npf npn npo npp npr npu nrd nre nrf nrn nro nrp nrr nru nrx nud nue nun nuo nup nur nuu nux nxd odd ode odf odn odo odp odr odu oed oee oef oen oeo oep oer oex of- ofd ofe off ofn ofo ofp ofr ofu ofx on- ond one onf onn ono onp onr onu onx oo- ood oof oon ooo oop oor oox op- opd ope opf opn opo opp opr opx or- ord ore orf orn oro orp orr oru orx ou- oud oue ouf oun ouo oup our ox- oxf oxn oxo oxx p-p pdd pde pdf pdn pdo pdp pdr pdu pdx ped pee pef pen peo pep per peu pex pfd pfe pff pfn pfo pfp pfr pfu pfx pn- pnd pne pnf pnn pno pnp pnr pnu pnx pod poe pof pon poo pop por pou pox ppd ppe ppf ppn ppo ppp ppr ppu ppx prd pre prf prn pro prp prr pru prx pud pue puf pun pup pur puu pxe pxr rdd rde rdf rdn rdo rdp rdr rdu rdx re- red ree ref ren reo rep rer reu rex rfd rfe rff rfn rfo rfp rfr rfu rnd rnn rno rnp rnr rnu rod roe rof ron roo rop ror rou rox rpd rpe rpf rpn rpo rpp rpr rpu rpx rrd rrf rrn rrp rrr rru rud rue ruf run ruo rup rur ruu rux rxp rxr udd ude udf udn udo udp udr udu udx ued uee uef uen uep uer ufd ufe uff ufn ufo ufp ufr ufu ufx un- und une unf unn uno unp unr unu unx uod uoe uon uoo uop uor uox up- upd upe upf upn upo upp upr upu upx ur- urd ure urf urn uro urp urr uru urx uue uun uur uuu uxf uxo uxr uxu xde xdf xdr xed xee xen xep xer xeu xex xfe xfn xfx xno xnu xod xof xon xoo xop xor xox xpd xpe xpf xpn xpo xpp xrd xrf xrx xue xun xup xxo xxp xxx