bbb bbd bbf bbm bbn bbr bbs bbt bdb bdd bdf bdm bdr bds bdt bfb bfd bff bfm bfn bfr bfs bft bmb bmd bmf bmm bmn bmr bms bmt bnb bnd bnf bnn bnr bns bnt brb brd brf brm brn brr brs brt bsb bsd bsf bsm bsn bsr bss bst btb btd btf btm btn btr bts btt dbb dbd dbf dbm dbn dbr dbs dbt ddb ddd ddf ddm ddn ddr dds ddt dfb dfd dff dfm dfn dfr dfs dft dmb dmd dmf dmm dmn dmr dms dmt dnb dnd dnf dnm dnn dnr dns dnt drb drd drm drn drr drs drt dsb dsd dsf dsm dsn dsr dss dst dtb dtd dtf dtm dtn dtr dts dtt fbb fbd fbf fbm fbn fbr fbs fbt fdb fdd fdf fdm fdn fdr fds fdt ffd fff ffm ffn ffr ffs fft fmb fmd fmf fmm fmn fmr fms fmt fnb fnd fnf fnm fnn fnr fns fnt frb frd frf frm frn frr frs frt fsb fsd fsf fsm fsn fsr fss fst ftb ftd ftf ftm ftn ftr fts ftt m-f m-r mbb mbd mbf mbm mbr mbs mbt mdb mdd mdf mdm mdn mdr mds mdt mfb mfd mff mfm mfn mfr mfs mft mmb mmd mmf mmm mmn mmr mms mmt mnb mnf mnm mnn mnr mns mnt mrb mrd mrf mrm mrn mrr mrs mrt msb msd msf msm msn msr mss mst mtb mtd mtf mtm mtn mtr mts mtt nbb nbd nbf nbm nbn nbr nbs nbt ndb ndd ndf ndm ndn ndr nds ndt nfb nfd nff nfn nfr nfs nft nmb nmd nmm nmn nmr nms nmt nnb nnf nnm nnn nns nnt nrb nrd nrf nrm nrn nrr nrs nrt nsb nsd nsf nsm nsn nsr nss nst ntb ntd ntf ntm ntn ntr nts ntt rbb rbd rbf rbm rbn rbr rbs rbt rdb rdd rdf rdm rdn rdr rds rdt rfb rfd rff rfm rfn rfr rfs rft rmb rmd rmf rmm rmn rmr rms rmt rnb rnd rnm rnn rnr rns rnt rrb rrd rrf rrm rrn rrr rrs rrt rsb rsd rsf rsm rsn rsr rss rst rtb rtd rtf rtm rtn rtr rts rtt sbb sbd sbf sbm sbn sbr sbs sbt sdb sdd sdf sdm sdn sdr sds sdt sfb sfd sff sfm sfn sfr sfs sft smb smd smf smm smn smr sms smt snb snd snf snm snn snr sns snt sr- srb srd srf srm srn srr srs srt ss- ssb ssd ssf ssm ssn ssr sss sst stb std stf stm stn str sts stt tbb tbd tbf tbm tbn tbr tbs tbt tdb tdd tdf tdm tdn tdr tds tdt tfb tfd tff tfm tfn tfr tfs tft tmb tmd tmf tmm tmn tmr tms tmt tnb tnd tnf tnm tnn tnr tns tnt trb trd trf trm trn trr trs trt tsb tsd tsf tsm tsn tsr tss tst ttb ttd ttf ttm ttn ttr tts ttt