-er -up ddd dde ddf ddi ddp ddr dds ddu de- ded dee def dei dep der des deu dfd dfe dff dfi dfp dfr dfs dfu di- did die dif dii dip dir dis diu dpd dpe dpf dpi dpp dpr dps dpu drd dre dri drp drr drs dru dsd dse dsf dsi dsp dsr dss dsu dud due duf dui dup dur dus ed- edd ede edf edi edp edr eds edu eed eee eef eep eer ees ef- efd efe eff efi efp efr efs eid eie eif eii eip eir eis eiu ep- epd epe epf epi epp epr eps epu erd ere erf eri erp err ers eru es- esd ese esf esi esp esr ess esu eu- eud eue euf eui eup eur eus fdd fde fdf fdi fdp fdr fds fdu fed fee fef fei fep fer fes feu ffd ffe fff ffi ffp ffr ffs ffu fid fie fif fii fip fir fis fiu fpd fpe fpi fpp fpr fps fpu frd fre frf fri frp frr frs fru fsd fse fsf fsi fsp fsr fss fsu fud fue fuf fui fup fur fus fuu i-d i-f idd ide idf idi idp idr ids idu ie- ied iee ief iei iep ier ies ifd ife iff ifi ifp ifr ifs ifu iid iie iif iii iip iir iis iiu ipd ipe ipf ipi ipp ipr ips ipu ir- ird ire irf iri irp irr irs iru is- isd ise isf isi isp isr iss isu iu- iud iue iui iup iur ius p-p pdd pde pdf pdi pdp pdr pds pdu ped pee pef pei pep per pes peu pfd pfe pff pfi pfp pfr pfs pfu pid pie pif pii pip pir pis piu ppd ppe ppf ppi ppp ppr pps ppu prd pre prf pri prp prr prs pru ps- psd pse psf psi psp psr pss psu pud pue puf pui pup pur pus puu rdd rde rdf rdi rdp rdr rds rdu re- red ree ref rei rep rer res reu rfd rfe rff rfi rfp rfr rfs rfu rid rie rif rii rip rir ris rpd rpe rpf rpi rpp rpr rps rpu rrd rrf rri rrp rrr rrs rru rsd rse rsf rsi rsp rsr rss rsu rud rue ruf rui rup rur rus ruu sdd sde sdf sdi sdp sdr sds sdu se- sed see sef sei sep ser ses seu sfd sfe sff sfi sfp sfr sfs sfu sid sie sif sii sip sir sis siu spd spe spf spi spp spr sps spu sr- srd sre srf sri srp srr srs ss- ssd sse ssf ssi ssp ssr sss ssu sud sue suf sui sup sur sus suu udd ude udf udi udp udr uds udu ued uee uef uei uep uer ues ufd ufe uff ufi ufp ufr ufs ufu uid uie uif uii uip uir uis uiu up- upd upe upf upi upp upr ups upu ur- urd ure urf uri urp urr urs uru usd use usf usi usp usr uss usu uue uur uus uuu