-ol bbb bbe bbg bbi bbl bbo bbs bbt be- beb bee beg bei bel beo bes bet bgb bge bgg bgi bgl bgo bgs bgt bi- bib bie big bii bil bio bis bit blb ble blg bli bll blo bls blt bob boe bog boi bol boo bos bot bsb bse bsg bsi bsl bso bss bst btb bte btg bti btl bto bts btt ebb ebe ebg ebi ebl ebo ebs ebt eeb eee eeg eel eeo ees eet egb ege egg egi egl ego egs egt eib eie eig eii eil eio eis eit elb ele elg eli ell elo els elt eo- eob eoe eog eoi eol eoo eos eot es- esb ese esg esi esl eso ess est etb ete etg eti etl eto ets ett gbe gbg gbi gbl gbo gbs gbt ge- geb gee geg gei gel geo ges get ggb ggg ggi ggo ggs ggt gib gie gig gii gil gio gis git glb gle glg gli gll glo gls glt gob goe gog goi gol goo gos got gsb gse gsg gsi gsl gso gss gst gtb gte gtg gti gtl gto gts gtt ibb ibe ibg ibi ibl ibo ibs ibt ie- iee ieg iei iel ies iet igb ige igg igi igl igo igs igt iib iie iii iil iio iis iit il- ilb ile ilg ili ill ilo ils ilt io- iob ioe iog ioi iol ioo ios iot is- isb ise isg isi isl iso iss ist itb ite itg iti itl ito its itt lbb lbe lbg lbi lbl lbo lbs lbt leb lee leg lei lel leo les let lgb lge lgg lgi lgl lgo lgs lgt lib lie lig lii lil lio lis lit llb lle llg lli lll llo lls llt lob loe log loi lol loo los lot lsb lse lsg lsi lsl lso lss lst ltb lte ltg lti ltl lto lts ltt o-i ob- obb obe obg obi obl obo obs obt oeb oee oeg oei oel oeo oes oet oge ogg ogi ogl ogo ogs ogt oib oie oii oil oio ois oit olb ole olg oli oll olo ols olt oo- oob oog ooi ool ooo oos oot os- osb ose osg osi osl oso oss ost ot- otb ote otg oti otl oto ots ott sbb sbe sbg sbi sbl sbo sbs sbt se- seb see seg sei sel seo ses set sgb sge sgg sgi sgl sgo sgs sgt sib sie sig sii sil sio sis sit slb sle slg sli sll slo sls slt sob soe sog soi sol soo sos sot ss- ssb sse ssg ssi ssl sso sss sst stb ste stg sti stl sto sts stt tbb tbe tbg tbi tbl tbo tbs tbt te- teb tee teg tei tel teo tes tet tgb tge tgg tgi tgl tgo tgs tgt tib tie tig tii til tio tis tit tle tlg tli tll tlo tls tlt to- tob toe tog toi tol too tos tot tsb tse tsg tsi tsl tso tss tst ttb tte ttg tti ttl tto tts ttt