-ol bbb bbd bbl bbm bbo bbs bdb bdd bdl bdm bdo bds blb bld bll blm blo bls bmb bmd bml bmm bmo bms bob bod bol bom boo bos bsb bsd bsl bsm bso bss dbb dbd dbl dbm dbo dbs ddb ddd ddl ddm ddo dds dl- dlb dld dll dlm dlo dls dmb dmd dml dmm dmo dms dob dod dol dom doo dos dsb dsd dsl dsm dso dss lbb lbd lbl lbm lbo lbs ldb ldd ldl ldm ldo lds llb lld lll llm llo lls lmb lmd lml lmm lmo lms lob lod lol lom loo los lsb lsd lsl lsm lso lss m-o mbb mbd mbl mbm mbo mbs mdb mdd mdl mdm mdo mds mlb mld mll mlm mlo mls mmb mmd mml mmm mmo mms mob mod mol mom moo mos msb msd msl msm mso mss ob- obb obd obl obm obo obs odb odd odl odm odo ods olb old oll olm olo ols om- omb omd oml omm omo oms oo- oob ood ool oom ooo oos os- osb osd osl osm oso oss sbb sbd sbl sbm sbo sbs sdb sdd sdl sdm sdo sds slb sld sll slm slo sls smb smd sml smm smo sms sob sod sol som soo sos ss- ssb ssd ssl ssm sso sss