-er -up ddd dde ddf ddi ddo ddp ddr dds ddu de- ded dee def dei deo dep der des deu dfd dfe dff dfi dfo dfp dfr dfs dfu di- did die dif dii dio dip dir dis diu dod doe dof doi doo dop dor dos dou dpd dpe dpf dpi dpo dpp dpr dps dpu drd dre dri dro drp drr drs dru dsd dse dsf dsi dso dsp dsr dss dsu dud due duf dui duo dup dur dus ed- edd ede edf edi edo edp edr eds edu eed eee eef eeo eep eer ees ef- efd efe eff efi efo efp efr efs eid eie eif eii eio eip eir eis eiu eo- eod eoe eof eoi eoo eop eor eos eou ep- epd epe epf epi epo epp epr eps epu erd ere erf eri ero erp err ers eru es- esd ese esf esi eso esp esr ess esu eu- eud eue euf eui eup eur eus fdd fde fdf fdi fdo fdp fdr fds fdu fed fee fef fei feo fep fer fes feu ffd ffe fff ffi ffo ffp ffr ffs ffu fid fie fif fii fip fir fis fiu foe fof foi foo fop for fos fou fpd fpe fpi fpo fpp fpr fps fpu frd fre frf fri fro frp frr frs fru fsd fse fsf fsi fso fsp fsr fss fsu fud fue fuf fui fuo fup fur fus fuu i-d i-f idd ide idf idi ido idp idr ids idu ie- ied iee ief iei iep ier ies ifd ife iff ifi ifo ifp ifr ifs ifu iid iie iif iii iio iip iir iis iiu io- iod ioe iof ioi ioo iop ior ios iou ipd ipe ipf ipi ipo ipp ipr ips ipu ir- ird ire irf iri iro irp irr irs iru is- isd ise isf isi iso isp isr iss isu iu- iud iue iui iup iur ius o-i odd ode odf odi odo odp odr ods odu oed oee oef oei oeo oep oer oes of- ofd ofe off ofi ofo ofp ofr ofs ofu oid oie oif oii oio oip oir ois oiu oo- ood oof ooi ooo oop oor oos op- opd ope opf opi opo opp opr ops or- ord ore orf ori oro orp orr ors oru os- osd ose osf osi oso osp osr oss osu ou- oud oue ouf oui ouo oup our ous p-p pdd pde pdf pdi pdo pdp pdr pds pdu ped pee pef pei peo pep per pes peu pfd pfe pff pfi pfo pfp pfr pfs pfu pid pie pif pii pio pip pir pis piu pod poe pof poi poo pop por pos pou ppd ppe ppf ppi ppo ppp ppr pps ppu prd pre prf pri pro prp prr prs pru ps- psd pse psf psi pso psp psr pss psu pud pue puf pui pup pur pus puu rdd rde rdf rdi rdo rdp rdr rds rdu re- red ree ref rei reo rep rer res reu rfd rfe rff rfi rfo rfp rfr rfs rfu rid rie rif rii rio rip rir ris rod roe rof roi roo rop ror ros rou rpd rpe rpf rpi rpo rpp rpr rps rpu rrd rrf rri rrp rrr rrs rru rsd rse rsf rsi rso rsp rsr rss rsu rud rue ruf rui ruo rup rur rus ruu sdd sde sdf sdi sdo sdp sdr sds sdu se- sed see sef sei seo sep ser ses seu sfd sfe sff sfi sfo sfp sfr sfs sfu sid sie sif sii sio sip sir sis siu sod soe sof soi soo sop sor sos sou spd spe spf spi spo spp spr sps spu sr- srd sre srf sri sro srp srr srs ss- ssd sse ssf ssi sso ssp ssr sss ssu sud sue suf sui suo sup sur sus suu udd ude udf udi udo udp udr uds udu ued uee uef uei uep uer ues ufd ufe uff ufi ufo ufp ufr ufs ufu uid uie uif uii uio uip uir uis uiu uod uoe uoo uop uor uos up- upd upe upf upi upo upp upr ups upu ur- urd ure urf uri uro urp urr urs uru usd use usf usi uso usp usr uss usu uue uur uus uuu