-ol bbb bbg bbi bbl bbn bbo bbs bbt bgb bgg bgi bgl bgn bgo bgs bgt bi- bib big bii bil bin bio bis bit blb blg bli bll bln blo bls blt bnb bng bni bnl bnn bno bns bnt bob bog boi bol bon boo bos bot bsb bsg bsi bsl bsn bso bss bst btb btg bti btl btn bto bts btt gbg gbi gbl gbn gbo gbs gbt ggb ggg ggi ggn ggo ggs ggt gib gig gii gil gin gio gis git glb glg gli gll gln glo gls glt gnb gni gnl gnn gno gns gnt gob gog goi gol gon goo gos got gsb gsg gsi gsl gsn gso gss gst gtb gtg gti gtl gtn gto gts gtt ibb ibg ibi ibl ibn ibo ibs ibt igb igg igi igl ign igo igs igt iib iii iil iin iio iis iit il- ilb ilg ili ill iln ilo ils ilt in- inb ing ini inl inn ino ins int io- iob iog ioi iol ion ioo ios iot is- isb isg isi isl isn iso iss ist itb itg iti itl itn ito its itt lbb lbg lbi lbl lbo lbs lbt lgb lgg lgi lgl lgn lgo lgs lgt lib lig lii lil lin lio lis lit llb llg lli lll lln llo lls llt lnb lng lni lnl lnn lno lns lnt lob log loi lol lon loo los lot lsb lsg lsi lsl lsn lso lss lst ltb ltg lti ltl lto lts ltt n-i nbb nbg nbi nbl nbn nbo nbs nbt ngb ngg ngi ngl ngn ngo ngs ngt nib nig nii nil nin nio nis nit nlb nlg nli nll nln nlo nls nlt nnb nng nni nnl nnn nno nns nnt no- nob nog noi nol non noo nos not nsb nsg nsi nsl nsn nso nss nst ntb ntg nti ntn nto nts ntt o-i ob- obb obg obi obl obn obo obs obt ogg ogi ogl ogn ogo ogs ogt oib oii oil oin oio ois oit olb olg oli oll oln olo ols olt on- onb ong oni onl onn ono ons ont oo- oob oog ooi ool oon ooo oos oot os- osb osg osi osl osn oso oss ost ot- otb otg oti otl otn oto ots ott sbb sbg sbi sbl sbn sbo sbs sbt sgb sgg sgi sgl sgn sgo sgs sgt sib sig sii sil sin sio sis sit slb slg sli sll sln slo sls slt snb sng sni snl snn sno sns snt sob sog soi sol son soo sos sot ss- ssb ssg ssi ssl ssn sso sss sst stb stg sti stl stn sto sts stt tbb tbg tbi tbl tbn tbo tbs tbt tgb tgg tgi tgl tgn tgo tgs tgt tib tig tii til tin tio tis tit tlg tli tll tln tlo tls tlt tnb tng tni tnl tnn tno tns tnt to- tob tog toi tol ton too tos tot tsb tsg tsi tsl tsn tso tss tst ttb ttg tti ttl ttn tto tts ttt