ddd dde ddf ddm ddo dds ddt de- ded dee def dem deo des det dfd dfe dff dfm dfo dfs dft dmd dme dmf dmm dmo dms dmt dod doe dof dom doo dos dot dsd dse dsf dsm dso dss dst dtd dte dtf dtm dto dts dtt ed- edd ede edf edm edo eds edt eed eee eef eem eeo ees eet ef- efd efe eff efm efo efs eft em- emd eme emf emm emo ems emt eo- eod eoe eof eom eoo eos eot es- esd ese esf esm eso ess est etd ete etf etm eto ets ett fdd fde fdf fdm fdo fds fdt fed fee fef fem feo fes fet ffd ffe fff ffm ffo ffs fft fmd fme fmf fmm fmo fms fmt foe fof fom foo fos fot fsd fse fsf fsm fso fss fst ftd fte ftf ftm fto fts ftt m-f m-o mdd mde mdf mdm mdo mds mdt med mee mef mem meo mes met mfd mfe mff mfm mfo mfs mft mmd mme mmf mmm mmo mms mmt mod moe mof mom moo mos mot msd mse msf msm mso mss mst mtd mte mtf mtm mto mts mtt odd ode odf odm odo ods odt oed oee oef oem oeo oes oet of- ofd ofe off ofm ofo ofs oft om- omd ome omf omm omo oms omt oo- ood oof oom ooo oos oot os- osd ose osf osm oso oss ost ot- otd ote otf otm oto ots ott sdd sde sdf sdm sdo sds sdt se- sed see sef sem seo ses set sfd sfe sff sfm sfo sfs sft smd sme smf smm smo sms smt sod soe sof som soo sos sot ss- ssd sse ssf ssm sso sss sst std ste stf stm sto sts stt tdd tde tdf tdm tdo tds tdt te- ted tee tef tem teo tes tet tfd tfe tff tfm tfo tfs tft tmd tme tmf tmm tmo tms tmt to- tod toe tof tom too tos tot tsd tse tsf tsm tso tss tst ttd tte ttf ttm tto tts ttt