ddd ddf ddm ddn ddo ddr ddt dfd dff dfm dfn dfo dfr dft dmd dmf dmm dmn dmo dmr dmt dnd dnf dnm dnn dno dnr dnt dod dof dom don doo dor dot drd drm drn dro drr drt dtd dtf dtm dtn dto dtr dtt fdd fdf fdm fdn fdo fdr fdt ffd fff ffm ffn ffo ffr fft fmd fmf fmm fmn fmo fmr fmt fnd fnf fnm fnn fnr fnt fof fom fon foo for fot frd frf frm frn fro frr frt ftd ftf ftm ftn fto ftr ftt m-f m-o m-r mdd mdf mdm mdn mdo mdr mdt mfd mff mfm mfn mfo mfr mft mmd mmf mmm mmn mmo mmr mmt mnf mnm mnn mno mnr mnt mod mof mom mon moo mor mot mrd mrf mrm mrn mro mrr mrt mtd mtf mtm mtn mto mtr mtt ndd ndf ndm ndn ndo ndr ndt nfd nff nfn nfo nfr nft nmd nmm nmn nmo nmr nmt nnf nnm nnn nno nnt no- nod nof nom non noo nor not nrd nrf nrm nrn nro nrr nrt ntd ntf ntm ntn nto ntr ntt odd odf odm odn odo odr odt of- ofd off ofm ofn ofo ofr oft om- omd omf omm omn omo omr omt on- ond onf onn ono onr ont oo- ood oof oom oon ooo oor oot or- ord orf orm orn oro orr ort ot- otd otf otm otn oto otr ott rdd rdf rdm rdn rdo rdr rdt rfd rff rfm rfn rfo rfr rft rmd rmf rmm rmn rmo rmr rmt rnd rnm rnn rno rnr rnt rod rof rom ron roo ror rot rrd rrf rrm rrn rrr rrt rtd rtf rtm rtn rto rtr rtt tdd tdf tdm tdn tdo tdr tdt tfd tff tfm tfn tfo tfr tft tmd tmf tmm tmn tmo tmr tmt tnd tnf tnm tnn tno tnr tnt to- tod tof tom ton too tor tot trd trf trm trn tro trr trt ttd ttf ttm ttn tto ttr ttt