-er -up ddd dde ddi ddo ddp ddr dds ddu ddx de- ded dee dei deo dep der des deu dex di- did die dii dio dip dir dis diu dix dod doe doi doo dop dor dos dou dox dpd dpe dpi dpo dpp dpr dps dpu drd dre dri dro drp drr drs dru drx dsd dse dsi dso dsp dsr dss dsu dsx dud due dui duo dup dur dus dux dxd dxi dxo dxp dxr dxs dxx ed- edd ede edi edo edp edr eds edu edx eed eee eeo eep eer ees eex eid eie eii eio eip eir eis eiu eix eo- eod eoe eoi eoo eop eor eos eou ep- epd epe epi epo epp epr eps epu epx erd ere eri ero erp err ers eru es- esd ese esi eso esp esr ess esu esx eu- eud eue eui eup eur eus eux ex- exd exe exi exo exp exr exs exu exx i-d idd ide idi ido idp idr ids idu idx ie- ied iee iei iep ier ies iex iid iie iii iio iip iir iis iiu iix io- iod ioe ioi ioo iop ior ios iou ipd ipe ipi ipo ipp ipr ips ipu ipx ir- ird ire iri iro irp irr irs iru irx is- isd ise isi iso isp isr iss isu iu- iud iue iui iup iur ius ixe ixi o-i odd ode odi odo odp odr ods odu oed oee oei oeo oep oer oes oex oid oie oii oio oip oir ois oiu oo- ood ooi ooo oop oor oos oox op- opd ope opi opo opp opr ops opx or- ord ore ori oro orp orr ors oru orx os- osd ose osi oso osp osr oss osu osx ou- oud oue oui ouo oup our ous ox- oxi oxo oxx p-p pdd pde pdi pdo pdp pdr pds pdu pdx ped pee pei peo pep per pes peu pex pid pie pii pio pip pir pis piu pix pod poe poi poo pop por pos pou pox ppd ppe ppi ppo ppp ppr pps ppu ppx prd pre pri pro prp prr prs pru prx ps- psd pse psi pso psp psr pss psu psx pud pue pui pup pur pus puu pxe pxr pxs rdd rde rdi rdo rdp rdr rds rdu rdx re- red ree rei reo rep rer res reu rex rid rie rii rio rip rir ris rix rod roe roi roo rop ror ros rou rox rpd rpe rpi rpo rpp rpr rps rpu rpx rrd rri rrp rrr rrs rru rsd rse rsi rso rsp rsr rss rsu rsx rud rue rui ruo rup rur rus ruu rux rxp rxr rxs sdd sde sdi sdo sdp sdr sds sdu se- sed see sei seo sep ser ses seu sex sid sie sii sio sip sir sis siu six sod soe soi soo sop sor sos sou sox spd spe spi spo spp spr sps spu spx sr- srd sre sri sro srp srr srs srx ss- ssd sse ssi sso ssp ssr sss ssu ssx sud sue sui suo sup sur sus suu sux sxi sxs sxu udd ude udi udo udp udr uds udu udx ued uee uei uep uer ues uid uie uii uio uip uir uis uiu uod uoe uoo uop uor uos uox up- upd upe upi upo upp upr ups upu upx ur- urd ure uri uro urp urr urs uru urx usd use usi uso usp usr uss usu usx uue uur uus uuu uxo uxr uxu xde xdi xdr xds xed xee xep xer xes xeu xex xie xii xio xis xiu xix xod xoi xoo xop xor xos xox xpd xpe xpo xpp xps xrd xrx xsi xsp xss xue xui xup xus xxi xxo xxp xxx