-er ddd dde ddi ddm ddn ddp ddr dds ddt de- ded dee dei dem den dep der des det di- did die dii dim din dip dir dis dit dmd dme dmi dmm dmn dmp dmr dms dmt dnd dne dni dnm dnn dnp dnr dns dnt dpd dpe dpi dpm dpn dpp dpr dps dpt drd dre dri drm drn drp drr drs drt dsd dse dsi dsm dsn dsp dsr dss dst dtd dte dti dtm dtn dtp dtr dts dtt ed- edd ede edi edm edn edp edr eds edt eed eee eem een eep eer ees eet eid eie eii eim ein eip eir eis eit em- emd eme emi emm emn emp emr ems emt en- end ene eni enm enn enp enr ens ent ep- epd epe epi epm epn epp epr eps ept erd ere eri erm ern erp err ers ert es- esd ese esi esm esn esp esr ess est etd ete eti etm etn etp etr ets ett i-d idd ide idi idm idn idp idr ids idt ie- ied iee iei iem ien iep ier ies iet iid iie iii iim iin iip iir iis iit im- imd ime imi imm imn imp ims imt in- ind ine ini inm inn inp inr ins int ipd ipe ipi ipm ipn ipp ipr ips ipt ir- ird ire iri irm irn irp irr irs irt is- isd ise isi ism isn isp isr iss ist itd ite iti itm itn itp its itt m-r mdd mde mdi mdm mdn mdp mdr mds mdt med mee mei mem men mep mer mes met mi- mid mie mii mim min mip mir mis mit mmd mme mmi mmm mmn mmp mmr mms mmt mne mni mnm mnn mnp mnr mns mnt mpd mpe mpi mpm mpn mpp mpr mps mpt mrd mre mri mrm mrn mrp mrr mrs mrt msd mse msi msm msn msp msr mss mst mtd mte mti mtm mtn mtp mtr mts mtt n-i ndd nde ndi ndm ndn ndp ndr nds ndt ne- ned nee nei nem nen nep ner nes net nid nie nii nim nin nip nir nis nit nmd nme nmi nmm nmn nmp nmr nms nmt nne nni nnm nnn nnp nns nnt npd npe npi npm npn npp npr nps npt nrd nre nri nrm nrn nrp nrr nrs nrt nsd nse nsi nsm nsn nsp nsr nss nst ntd nte nti ntm ntn ntp ntr nts ntt p-p pdd pde pdi pdm pdn pdp pdr pds pdt ped pee pei pem pen pep per pes pet pid pie pii pim pin pip pir pis pit pmd pme pmi pmm pmn pmp pmr pms pmt pn- pnd pne pni pnm pnn pnp pnr pns pnt ppd ppe ppi ppm ppn ppp ppr pps ppt prd pre pri prm prn prp prr prs prt ps- psd pse psi psm psn psp psr pss pst pt- ptd pte pti ptm ptn ptp ptr pts ptt rdd rde rdi rdm rdn rdp rdr rds rdt re- red ree rei rem ren rep rer res ret rid rie rii rim rin rip rir ris rit rmd rme rmi rmm rmn rmp rmr rms rmt rnd rni rnm rnn rnp rnr rns rnt rpd rpe rpi rpm rpn rpp rpr rps rpt rrd rri rrm rrn rrp rrr rrs rrt rsd rse rsi rsm rsn rsp rsr rss rst rtd rte rti rtm rtn rtp rtr rts rtt sdd sde sdi sdm sdn sdp sdr sds sdt se- sed see sei sem sen sep ser ses set sid sie sii sim sin sip sir sis sit smd sme smi smm smn smp smr sms smt snd sne sni snm snn snp snr sns snt spd spe spi spm spn spp spr sps spt sr- srd sre sri srm srn srp srr srs srt ss- ssd sse ssi ssm ssn ssp ssr sss sst std ste sti stm stn stp str sts stt tdd tde tdi tdm tdn tdp tdr tds tdt te- ted tee tei tem ten tep ter tes tet tid tie tii tim tin tip tir tis tit tmd tme tmi tmm tmn tmp tmr tms tmt tnd tne tni tnm tnn tnp tnr tns tnt tpd tpe tpi tpm tpn tpp tpr tps tpt trd tre tri trm trn trp trr trs trt tsd tse tsi tsm tsn tsp tsr tss tst ttd tte tti ttm ttn ttp ttr tts ttt