-er ddd dde ddi ddm ddp ddr dds ddt de- ded dee dei dem dep der des det di- did die dii dim dip dir dis dit dmd dme dmi dmm dmp dmr dms dmt dpd dpe dpi dpm dpp dpr dps dpt drd dre dri drm drp drr drs drt dsd dse dsi dsm dsp dsr dss dst dtd dte dti dtm dtp dtr dts dtt ed- edd ede edi edm edp edr eds edt eed eee eem eep eer ees eet eid eie eii eim eip eir eis eit em- emd eme emi emm emp emr ems emt ep- epd epe epi epm epp epr eps ept erd ere eri erm erp err ers ert es- esd ese esi esm esp esr ess est etd ete eti etm etp etr ets ett i-d idd ide idi idm idp idr ids idt ie- ied iee iei iem iep ier ies iet iid iie iii iim iip iir iis iit im- imd ime imi imm imp ims imt ipd ipe ipi ipm ipp ipr ips ipt ir- ird ire iri irm irp irr irs irt is- isd ise isi ism isp isr iss ist itd ite iti itm itp its itt m-r mdd mde mdi mdm mdp mdr mds mdt med mee mei mem mep mer mes met mi- mid mie mii mim mip mir mis mit mmd mme mmi mmm mmp mmr mms mmt mpd mpe mpi mpm mpp mpr mps mpt mrd mre mri mrm mrp mrr mrs mrt msd mse msi msm msp msr mss mst mtd mte mti mtm mtp mtr mts mtt p-p pdd pde pdi pdm pdp pdr pds pdt ped pee pei pem pep per pes pet pid pie pii pim pip pir pis pit pmd pme pmi pmm pmp pmr pms pmt ppd ppe ppi ppm ppp ppr pps ppt prd pre pri prm prp prr prs prt ps- psd pse psi psm psp psr pss pst pt- ptd pte pti ptm ptp ptr pts ptt rdd rde rdi rdm rdp rdr rds rdt re- red ree rei rem rep rer res ret rid rie rii rim rip rir ris rit rmd rme rmi rmm rmp rmr rms rmt rpd rpe rpi rpm rpp rpr rps rpt rrd rri rrm rrp rrr rrs rrt rsd rse rsi rsm rsp rsr rss rst rtd rte rti rtm rtp rtr rts rtt sdd sde sdi sdm sdp sdr sds sdt se- sed see sei sem sep ser ses set sid sie sii sim sip sir sis sit smd sme smi smm smp smr sms smt spd spe spi spm spp spr sps spt sr- srd sre sri srm srp srr srs srt ss- ssd sse ssi ssm ssp ssr sss sst std ste sti stm stp str sts stt tdd tde tdi tdm tdp tdr tds tdt te- ted tee tei tem tep ter tes tet tid tie tii tim tip tir tis tit tmd tme tmi tmm tmp tmr tms tmt tpd tpe tpi tpm tpp tpr tps tpt trd tre tri trm trp trr trs trt tsd tse tsi tsm tsp tsr tss tst ttd tte tti ttm ttp ttr tts ttt