-ol bbb bbi bbl bbn bbo bbs bi- bib bii bil bin bio bis blb bli bll bln blo bls bnb bni bnl bnn bno bns bob boi bol bon boo bos bsb bsi bsl bsn bso bss ibb ibi ibl ibn ibo ibs iib iii iil iin iio iis il- ilb ili ill iln ilo ils in- inb ini inl inn ino ins io- iob ioi iol ion ioo ios is- isb isi isl isn iso iss lbb lbi lbl lbo lbs lib lii lil lin lio lis llb lli lll lln llo lls lnb lni lnl lnn lno lns lob loi lol lon loo los lsb lsi lsl lsn lso lss n-i nbb nbi nbl nbn nbo nbs nib nii nil nin nio nis nlb nli nll nln nlo nls nnb nni nnl nnn nno nns no- nob noi nol non noo nos nsb nsi nsl nsn nso nss o-i ob- obb obi obl obn obo obs oib oii oil oin oio ois olb oli oll oln olo ols on- onb oni onl onn ono ons oo- oob ooi ool oon ooo oos os- osb osi osl osn oso oss sbb sbi sbl sbn sbo sbs sib sii sil sin sio sis slb sli sll sln slo sls snb sni snl snn sno sns sob soi sol son soo sos ss- ssb ssi ssl ssn sso sss