-ol bbb bbd bbi bbk bbl bbm bbo bbs bdb bdd bdi bdk bdl bdm bdo bds bi- bib bid bii bik bil bim bio bis bkb bkk bkl bkm bko bks blb bld bli blk bll blm blo bls bmb bmd bmi bmk bml bmm bmo bms bob bod boi bok bol bom boo bos bsb bsd bsi bsk bsl bsm bso bss dbb dbd dbi dbk dbl dbm dbo dbs ddb ddd ddi ddk ddl ddm ddo dds di- dib did dii dik dil dim dio dis dkb dki dkk dkl dkm dko dks dl- dlb dld dli dlk dll dlm dlo dls dmb dmd dmi dmk dml dmm dmo dms dob dod doi dok dol dom doo dos dsb dsd dsi dsk dsl dsm dso dss i-d ibb ibd ibi ibk ibl ibm ibo ibs idb idd idi idk idl idm ido ids iib iid iii iil iim iio iis ikb iki ikk ikl iko iks il- ilb ild ili ilk ill ilm ilo ils im- imb imd imi iml imm imo ims io- iob iod ioi iol iom ioo ios is- isb isd isi isk isl ism iso iss kbb kbd kbi kbk kbl kbm kbo kbs kdb kdk kdl kdm kdo kds kib kid kii kik kil kim kio kis kkb kki kkk kkl kkm kks kl- klb kld kli klm klo kls kmb kmd kmi kmk kml kmm kmo kms kob kod koi kok kol kom koo kos ksb ksd ksi ksk ksl ksm kso kss lbb lbd lbi lbk lbl lbm lbo lbs ldb ldd ldi ldk ldl ldm ldo lds lib lid lii lik lil lim lio lis lkb lkl lks llb lld lli llk lll llm llo lls lmb lmd lmi lmk lml lmm lmo lms lob lod loi lok lol lom loo los lsb lsd lsi lsk lsl lsm lso lss m-o mbb mbd mbi mbk mbl mbm mbo mbs mdb mdd mdi mdk mdl mdm mdo mds mi- mib mid mii mik mil mim mio mis mkb mkd mkk mkl mkm mko mks mlb mld mli mlk mll mlm mlo mls mmb mmd mmi mmk mml mmm mmo mms mob mod moi mok mol mom moo mos msb msd msi msk msl msm mso mss o-i ob- obb obd obi obk obl obm obo obs odb odd odi odl odm odo ods oib oid oii oik oil oim oio ois okb okd oki okk okl oko oks olb old oli olk oll olm olo ols om- omb omd omi oml omm omo oms oo- oob ood ooi ook ool oom ooo oos os- osb osd osi osk osl osm oso oss sbb sbd sbi sbk sbl sbm sbo sbs sdb sdd sdi sdk sdl sdm sdo sds sib sid sii sik sil sim sio sis sk- skb skd ski skk skl skm sko sks slb sld sli slk sll slm slo sls smb smd smi smk sml smm smo sms sob sod soi sok sol som soo sos ss- ssb ssd ssi ssk ssl ssm sso sss