-up ddd dde ddi ddp dds ddt ddu ddx de- ded dee dei dep des det deu dex di- did die dii dip dis dit diu dix dpd dpe dpi dpp dps dpt dpu dsd dse dsi dsp dss dst dsu dsx dtd dte dti dtp dts dtt dtu dtx dud due dui dup dus dut dux dxd dxi dxp dxs dxt dxx ed- edd ede edi edp eds edt edu edx eed eee eep ees eet eex eid eie eii eip eis eit eiu eix ep- epd epe epi epp eps ept epu epx es- esd ese esi esp ess est esu esx etd ete eti etp ets ett etu etx eu- eud eue eui eup eus eut eux ex- exd exe exi exp exs ext exu exx i-d idd ide idi idp ids idt idu idx ie- ied iee iei iep ies iet iex iid iie iii iip iis iit iiu iix ipd ipe ipi ipp ips ipt ipu ipx is- isd ise isi isp iss ist isu itd ite iti itp its itt itu itx iu- iud iue iui iup ius iut ixe ixi p-p pdd pde pdi pdp pds pdt pdu pdx ped pee pei pep pes pet peu pex pid pie pii pip pis pit piu pix ppd ppe ppi ppp pps ppt ppu ppx ps- psd pse psi psp pss pst psu psx pt- ptd pte pti ptp pts ptt ptu ptx pud pue pui pup pus put puu pxe pxs pxt sdd sde sdi sdp sds sdt sdu se- sed see sei sep ses set seu sex sid sie sii sip sis sit siu six spd spe spi spp sps spt spu spx ss- ssd sse ssi ssp sss sst ssu ssx std ste sti stp sts stt stu stx sud sue sui sup sus sut suu sux sxi sxs sxt sxu t-x tdd tde tdi tdp tds tdt tdu tdx te- ted tee tei tep tes tet teu tex tid tie tii tip tis tit tiu tix tpd tpe tpi tpp tps tpt tpu tpx tsd tse tsi tsp tss tst tsu tsx ttd tte tti ttp tts ttt ttu ttx tud tue tui tup tus tut tuu tux txe txi txs txt txu udd ude udi udp uds udt udu udx ued uee uei uep ues uet uid uie uii uip uis uit uiu up- upd upe upi upp ups upt upu upx usd use usi usp uss ust usu usx utd ute uti utp uts utt utu utx uue uus uut uuu uxt uxu xde xdi xds xdt xed xee xep xes xet xeu xex xie xii xis xit xiu xix xpd xpe xpp xps xpt xsi xsp xss xst xti xtp xts xtx xue xui xup xus xxi xxp xxx