bbb bbd bbm bbr bbs bdb bdd bdm bdr bds bmb bmd bmm bmr bms brb brd brm brr brs bsb bsd bsm bsr bss dbb dbd dbm dbr dbs ddb ddd ddm ddr dds dmb dmd dmm dmr dms drb drd drm drr drs dsb dsd dsm dsr dss m-r mbb mbd mbm mbr mbs mdb mdd mdm mdr mds mmb mmd mmm mmr mms mrb mrd mrm mrr mrs msb msd msm msr mss rbb rbd rbm rbr rbs rdb rdd rdm rdr rds rmb rmd rmm rmr rms rrb rrd rrm rrr rrs rsb rsd rsm rsr rss sbb sbd sbm sbr sbs sdb sdd sdm sdr sds smb smd smm smr sms sr- srb srd srm srr srs ss- ssb ssd ssm ssr sss