-er -up ddd dde ddi ddo ddp ddr dds ddt ddu ddx de- ded dee dei deo dep der des det deu dex di- did die dii dio dip dir dis dit diu dix dod doe doi doo dop dor dos dot dou dox dpd dpe dpi dpo dpp dpr dps dpt dpu drd dre dri dro drp drr drs drt dru drx dsd dse dsi dso dsp dsr dss dst dsu dsx dtd dte dti dto dtp dtr dts dtt dtu dtx dud due dui duo dup dur dus dut dux dxd dxi dxo dxp dxr dxs dxt dxx ed- edd ede edi edo edp edr eds edt edu edx eed eee eeo eep eer ees eet eex eid eie eii eio eip eir eis eit eiu eix eo- eod eoe eoi eoo eop eor eos eot eou ep- epd epe epi epo epp epr eps ept epu epx erd ere eri ero erp err ers ert eru es- esd ese esi eso esp esr ess est esu esx etd ete eti eto etp etr ets ett etu etx eu- eud eue eui eup eur eus eut eux ex- exd exe exi exo exp exr exs ext exu exx i-d idd ide idi ido idp idr ids idt idu idx ie- ied iee iei iep ier ies iet iex iid iie iii iio iip iir iis iit iiu iix io- iod ioe ioi ioo iop ior ios iot iou ipd ipe ipi ipo ipp ipr ips ipt ipu ipx ir- ird ire iri iro irp irr irs irt iru irx is- isd ise isi iso isp isr iss ist isu itd ite iti ito itp its itt itu itx iu- iud iue iui iup iur ius iut ixe ixi o-i odd ode odi odo odp odr ods odt odu oed oee oei oeo oep oer oes oet oex oid oie oii oio oip oir ois oit oiu oo- ood ooi ooo oop oor oos oot oox op- opd ope opi opo opp opr ops opt opx or- ord ore ori oro orp orr ors ort oru orx os- osd ose osi oso osp osr oss ost osu osx ot- otd ote oti oto otp otr ots ott otu ou- oud oue oui ouo oup our ous out ox- oxi oxo oxt oxx p-p pdd pde pdi pdo pdp pdr pds pdt pdu pdx ped pee pei peo pep per pes pet peu pex pid pie pii pio pip pir pis pit piu pix pod poe poi poo pop por pos pot pou pox ppd ppe ppi ppo ppp ppr pps ppt ppu ppx prd pre pri pro prp prr prs prt pru prx ps- psd pse psi pso psp psr pss pst psu psx pt- ptd pte pti pto ptp ptr pts ptt ptu ptx pud pue pui pup pur pus put puu pxe pxr pxs pxt rdd rde rdi rdo rdp rdr rds rdt rdu rdx re- red ree rei reo rep rer res ret reu rex rid rie rii rio rip rir ris rit rix rod roe roi roo rop ror ros rot rou rox rpd rpe rpi rpo rpp rpr rps rpt rpu rpx rrd rri rrp rrr rrs rrt rru rsd rse rsi rso rsp rsr rss rst rsu rsx rtd rte rti rto rtp rtr rts rtt rtu rtx rud rue rui ruo rup rur rus rut ruu rux rxp rxr rxs sdd sde sdi sdo sdp sdr sds sdt sdu se- sed see sei seo sep ser ses set seu sex sid sie sii sio sip sir sis sit siu six sod soe soi soo sop sor sos sot sou sox spd spe spi spo spp spr sps spt spu spx sr- srd sre sri sro srp srr srs srt srx ss- ssd sse ssi sso ssp ssr sss sst ssu ssx std ste sti sto stp str sts stt stu stx sud sue sui suo sup sur sus sut suu sux sxi sxs sxt sxu t-x tdd tde tdi tdo tdp tdr tds tdt tdu tdx te- ted tee tei teo tep ter tes tet teu tex tid tie tii tio tip tir tis tit tiu tix to- tod toe toi too top tor tos tot tou tox tpd tpe tpi tpo tpp tpr tps tpt tpu tpx trd tre tri tro trp trr trs trt tru trx tsd tse tsi tso tsp tsr tss tst tsu tsx ttd tte tti tto ttp ttr tts ttt ttu ttx tud tue tui tuo tup tur tus tut tuu tux txe txi txs txt txu udd ude udi udo udp udr uds udt udu udx ued uee uei uep uer ues uet uid uie uii uio uip uir uis uit uiu uod uoe uoo uop uor uos uot uox up- upd upe upi upo upp upr ups upt upu upx ur- urd ure uri uro urp urr urs urt uru urx usd use usi uso usp usr uss ust usu usx utd ute uti uto utp utr uts utt utu utx uue uur uus uut uuu uxo uxr uxt uxu xde xdi xdr xds xdt xed xee xep xer xes xet xeu xex xie xii xio xis xit xiu xix xod xoi xoo xop xor xos xot xox xpd xpe xpo xpp xps xpt xrd xrt xrx xsi xsp xss xst xti xtp xtr xts xtx xue xui xup xus xxi xxo xxp xxx