-er ddd dde ddm ddp ddr ddt de- ded dee dem dep der det dmd dme dmm dmp dmr dmt dpd dpe dpm dpp dpr dpt drd dre drm drp drr drt dtd dte dtm dtp dtr dtt ed- edd ede edm edp edr edt eed eee eem eep eer eet em- emd eme emm emp emr emt ep- epd epe epm epp epr ept erd ere erm erp err ert etd ete etm etp etr ett m-r mdd mde mdm mdp mdr mdt med mee mem mep mer met mmd mme mmm mmp mmr mmt mpd mpe mpm mpp mpr mpt mrd mre mrm mrp mrr mrt mtd mte mtm mtp mtr mtt p-p pdd pde pdm pdp pdr pdt ped pee pem pep per pet pmd pme pmm pmp pmr pmt ppd ppe ppm ppp ppr ppt prd pre prm prp prr prt pt- ptd pte ptm ptp ptr ptt rdd rde rdm rdp rdr rdt re- red ree rem rep rer ret rmd rme rmm rmp rmr rmt rpd rpe rpm rpp rpr rpt rrd rrm rrp rrr rrt rtd rte rtm rtp rtr rtt tdd tde tdm tdp tdr tdt te- ted tee tem tep ter tet tmd tme tmm tmp tmr tmt tpd tpe tpm tpp tpr tpt trd tre trm trp trr trt ttd tte ttm ttp ttr ttt