ddd dde ddm ddp dds ddt de- ded dee dem dep des det dmd dme dmm dmp dms dmt dpd dpe dpm dpp dps dpt dsd dse dsm dsp dss dst dtd dte dtm dtp dts dtt ed- edd ede edm edp eds edt eed eee eem eep ees eet em- emd eme emm emp ems emt ep- epd epe epm epp eps ept es- esd ese esm esp ess est etd ete etm etp ets ett mdd mde mdm mdp mds mdt med mee mem mep mes met mmd mme mmm mmp mms mmt mpd mpe mpm mpp mps mpt msd mse msm msp mss mst mtd mte mtm mtp mts mtt p-p pdd pde pdm pdp pds pdt ped pee pem pep pes pet pmd pme pmm pmp pms pmt ppd ppe ppm ppp pps ppt ps- psd pse psm psp pss pst pt- ptd pte ptm ptp pts ptt sdd sde sdm sdp sds sdt se- sed see sem sep ses set smd sme smm smp sms smt spd spe spm spp sps spt ss- ssd sse ssm ssp sss sst std ste stm stp sts stt tdd tde tdm tdp tds tdt te- ted tee tem tep tes tet tmd tme tmm tmp tms tmt tpd tpe tpm tpp tps tpt tsd tse tsm tsp tss tst ttd tte ttm ttp tts ttt