-er ddd dde ddm ddo ddp ddr ddt de- ded dee dem deo dep der det dmd dme dmm dmo dmp dmr dmt dod doe dom doo dop dor dot dpd dpe dpm dpo dpp dpr dpt drd dre drm dro drp drr drt dtd dte dtm dto dtp dtr dtt ed- edd ede edm edo edp edr edt eed eee eem eeo eep eer eet em- emd eme emm emo emp emr emt eo- eod eoe eom eoo eop eor eot ep- epd epe epm epo epp epr ept erd ere erm ero erp err ert etd ete etm eto etp etr ett m-o m-r mdd mde mdm mdo mdp mdr mdt med mee mem meo mep mer met mmd mme mmm mmo mmp mmr mmt mod moe mom moo mop mor mot mpd mpe mpm mpo mpp mpr mpt mrd mre mrm mro mrp mrr mrt mtd mte mtm mto mtp mtr mtt odd ode odm odo odp odr odt oed oee oem oeo oep oer oet om- omd ome omm omo omp omr omt oo- ood oom ooo oop oor oot op- opd ope opm opo opp opr opt or- ord ore orm oro orp orr ort ot- otd ote otm oto otp otr ott p-p pdd pde pdm pdo pdp pdr pdt ped pee pem peo pep per pet pmd pme pmm pmo pmp pmr pmt pod poe pom poo pop por pot ppd ppe ppm ppo ppp ppr ppt prd pre prm pro prp prr prt pt- ptd pte ptm pto ptp ptr ptt rdd rde rdm rdo rdp rdr rdt re- red ree rem reo rep rer ret rmd rme rmm rmo rmp rmr rmt rod roe rom roo rop ror rot rpd rpe rpm rpo rpp rpr rpt rrd rrm rrp rrr rrt rtd rte rtm rto rtp rtr rtt tdd tde tdm tdo tdp tdr tdt te- ted tee tem teo tep ter tet tmd tme tmm tmo tmp tmr tmt to- tod toe tom too top tor tot tpd tpe tpm tpo tpp tpr tpt trd tre trm tro trp trr trt ttd tte ttm tto ttp ttr ttt