-er -up ddd dde ddf ddo ddp ddr dds ddu de- ded dee def deo dep der des deu dfd dfe dff dfo dfp dfr dfs dfu dod doe dof doo dop dor dos dou dpd dpe dpf dpo dpp dpr dps dpu drd dre dro drp drr drs dru dsd dse dsf dso dsp dsr dss dsu dud due duf duo dup dur dus ed- edd ede edf edo edp edr eds edu eed eee eef eeo eep eer ees ef- efd efe eff efo efp efr efs eo- eod eoe eof eoo eop eor eos eou ep- epd epe epf epo epp epr eps epu erd ere erf ero erp err ers eru es- esd ese esf eso esp esr ess esu eu- eud eue euf eup eur eus fdd fde fdf fdo fdp fdr fds fdu fed fee fef feo fep fer fes feu ffd ffe fff ffo ffp ffr ffs ffu foe fof foo fop for fos fou fpd fpe fpo fpp fpr fps fpu frd fre frf fro frp frr frs fru fsd fse fsf fso fsp fsr fss fsu fud fue fuf fuo fup fur fus fuu odd ode odf odo odp odr ods odu oed oee oef oeo oep oer oes of- ofd ofe off ofo ofp ofr ofs ofu oo- ood oof ooo oop oor oos op- opd ope opf opo opp opr ops or- ord ore orf oro orp orr ors oru os- osd ose osf oso osp osr oss osu ou- oud oue ouf ouo oup our ous p-p pdd pde pdf pdo pdp pdr pds pdu ped pee pef peo pep per pes peu pfd pfe pff pfo pfp pfr pfs pfu pod poe pof poo pop por pos pou ppd ppe ppf ppo ppp ppr pps ppu prd pre prf pro prp prr prs pru ps- psd pse psf pso psp psr pss psu pud pue puf pup pur pus puu rdd rde rdf rdo rdp rdr rds rdu re- red ree ref reo rep rer res reu rfd rfe rff rfo rfp rfr rfs rfu rod roe rof roo rop ror ros rou rpd rpe rpf rpo rpp rpr rps rpu rrd rrf rrp rrr rrs rru rsd rse rsf rso rsp rsr rss rsu rud rue ruf ruo rup rur rus ruu sdd sde sdf sdo sdp sdr sds sdu se- sed see sef seo sep ser ses seu sfd sfe sff sfo sfp sfr sfs sfu sod soe sof soo sop sor sos sou spd spe spf spo spp spr sps spu sr- srd sre srf sro srp srr srs ss- ssd sse ssf sso ssp ssr sss ssu sud sue suf suo sup sur sus suu udd ude udf udo udp udr uds udu ued uee uef uep uer ues ufd ufe uff ufo ufp ufr ufs ufu uod uoe uoo uop uor uos up- upd upe upf upo upp upr ups upu ur- urd ure urf uro urp urr urs uru usd use usf uso usp usr uss usu uue uur uus uuu