-ol bbb bbg bbi bbl bbo bbs bgb bgg bgi bgl bgo bgs bi- bib big bii bil bio bis blb blg bli bll blo bls bob bog boi bol boo bos bsb bsg bsi bsl bso bss gbg gbi gbl gbo gbs ggb ggg ggi ggo ggs gib gig gii gil gio gis glb glg gli gll glo gls gob gog goi gol goo gos gsb gsg gsi gsl gso gss ibb ibg ibi ibl ibo ibs igb igg igi igl igo igs iib iii iil iio iis il- ilb ilg ili ill ilo ils io- iob iog ioi iol ioo ios is- isb isg isi isl iso iss lbb lbg lbi lbl lbo lbs lgb lgg lgi lgl lgo lgs lib lig lii lil lio lis llb llg lli lll llo lls lob log loi lol loo los lsb lsg lsi lsl lso lss o-i ob- obb obg obi obl obo obs ogg ogi ogl ogo ogs oib oii oil oio ois olb olg oli oll olo ols oo- oob oog ooi ool ooo oos os- osb osg osi osl oso oss sbb sbg sbi sbl sbo sbs sgb sgg sgi sgl sgo sgs sib sig sii sil sio sis slb slg sli sll slo sls sob sog soi sol soo sos ss- ssb ssg ssi ssl sso sss