-ol bbb bbg bbi bbl bbm bbo bbr bbs bgb bgg bgi bgl bgm bgo bgr bgs bi- bib big bii bil bim bio bir bis blb blg bli bll blm blo blr bls bmb bmg bmi bml bmm bmo bmr bms bob bog boi bol bom boo bor bos brb brg bri brl brm bro brr brs bsb bsg bsi bsl bsm bso bsr bss gbg gbi gbl gbm gbo gbr gbs ggb ggg ggi ggm ggo ggr ggs gib gig gii gil gim gio gir gis glb glg gli gll glm glo glr gls gmb gmg gmi gml gmm gmo gmr gms gob gog goi gol gom goo gor gos grb grg gri grl grm gro grr grs gsb gsg gsi gsl gsm gso gsr gss ibb ibg ibi ibl ibm ibo ibr ibs igb igg igi igl igm igo igr igs iib iii iil iim iio iir iis il- ilb ilg ili ill ilm ilo ilr ils im- imb img imi iml imm imo ims io- iob iog ioi iol iom ioo ior ios ir- irb irg iri irl irm iro irr irs is- isb isg isi isl ism iso isr iss lbb lbg lbi lbl lbm lbo lbr lbs lgb lgg lgi lgl lgm lgo lgr lgs lib lig lii lil lim lio lir lis llb llg lli lll llm llo llr lls lmb lmg lmi lml lmm lmo lmr lms lob log loi lol lom loo lor los lrb lrg lri lrm lro lrr lrs lsb lsg lsi lsl lsm lso lsr lss m-o m-r mbb mbg mbi mbl mbm mbo mbr mbs mgb mgi mgl mgm mgo mgr mgs mi- mib mig mii mil mim mio mir mis mlb mlg mli mll mlm mlo mlr mls mmb mmg mmi mml mmm mmo mmr mms mob mog moi mol mom moo mor mos mrb mrg mri mrl mrm mro mrr mrs msb msg msi msl msm mso msr mss o-i ob- obb obg obi obl obm obo obr obs ogg ogi ogl ogo ogs oib oii oil oim oio oir ois olb olg oli oll olm olo ols om- omb omg omi oml omm omo omr oms oo- oob oog ooi ool oom ooo oor oos or- orb org ori orl orm oro orr ors os- osb osg osi osl osm oso osr oss rbb rbg rbi rbl rbm rbo rbr rbs rgb rgg rgi rgo rgr rgs rib rig rii ril rim rio rir ris rlg rli rll rlm rlo rlr rls rmb rmg rmi rml rmm rmo rmr rms rob rog roi rol rom roo ror ros rrb rrg rri rrl rrm rrr rrs rsb rsg rsi rsl rsm rso rsr rss sbb sbg sbi sbl sbm sbo sbr sbs sgb sgg sgi sgl sgm sgo sgr sgs sib sig sii sil sim sio sir sis slb slg sli sll slm slo slr sls smb smg smi sml smm smo smr sms sob sog soi sol som soo sor sos sr- srb srg sri srl srm sro srr srs ss- ssb ssg ssi ssl ssm sso ssr sss