ddd ddf ddn ddo ddr dds ddt dfd dff dfn dfo dfr dfs dft dnd dnf dnn dno dnr dns dnt dod dof don doo dor dos dot drd drn dro drr drs drt dsd dsf dsn dso dsr dss dst dtd dtf dtn dto dtr dts dtt fdd fdf fdn fdo fdr fds fdt ffd fff ffn ffo ffr ffs fft fnd fnf fnn fnr fns fnt fof fon foo for fos fot frd frf frn fro frr frs frt fsd fsf fsn fso fsr fss fst ftd ftf ftn fto ftr fts ftt ndd ndf ndn ndo ndr nds ndt nfd nff nfn nfo nfr nfs nft nnf nnn nno nns nnt no- nod nof non noo nor nos not nrd nrf nrn nro nrr nrs nrt nsd nsf nsn nso nsr nss nst ntd ntf ntn nto ntr nts ntt odd odf odn odo odr ods odt of- ofd off ofn ofo ofr ofs oft on- ond onf onn ono onr ons ont oo- ood oof oon ooo oor oos oot or- ord orf orn oro orr ors ort os- osd osf osn oso osr oss ost ot- otd otf otn oto otr ots ott rdd rdf rdn rdo rdr rds rdt rfd rff rfn rfo rfr rfs rft rnd rnn rno rnr rns rnt rod rof ron roo ror ros rot rrd rrf rrn rrr rrs rrt rsd rsf rsn rso rsr rss rst rtd rtf rtn rto rtr rts rtt sdd sdf sdn sdo sdr sds sdt sfd sff sfn sfo sfr sfs sft snd snf snn sno snr sns snt sod sof son soo sor sos sot sr- srd srf srn sro srr srs srt ss- ssd ssf ssn sso ssr sss sst std stf stn sto str sts stt tdd tdf tdn tdo tdr tds tdt tfd tff tfn tfo tfr tfs tft tnd tnf tnn tno tnr tns tnt to- tod tof ton too tor tos tot trd trf trn tro trr trs trt tsd tsf tsn tso tsr tss tst ttd ttf ttn tto ttr tts ttt