-ol bbb bbe bbg bbl bbn bbo bbs bbt be- beb bee beg bel ben beo bes bet bgb bge bgg bgl bgn bgo bgs bgt blb ble blg bll bln blo bls blt bnb bne bng bnl bnn bno bns bnt bob boe bog bol bon boo bos bot bsb bse bsg bsl bsn bso bss bst btb bte btg btl btn bto bts btt ebb ebe ebg ebl ebn ebo ebs ebt eeb eee eeg eel een eeo ees eet egb ege egg egl egn ego egs egt elb ele elg ell eln elo els elt en- enb ene eng enl enn eno ens ent eo- eob eoe eog eol eon eoo eos eot es- esb ese esg esl esn eso ess est etb ete etg etl etn eto ets ett gbe gbg gbl gbn gbo gbs gbt ge- geb gee geg gel gen geo ges get ggb ggg ggn ggo ggs ggt glb gle glg gll gln glo gls glt gnb gne gnl gnn gno gns gnt gob goe gog gol gon goo gos got gsb gse gsg gsl gsn gso gss gst gtb gte gtg gtl gtn gto gts gtt lbb lbe lbg lbl lbo lbs lbt leb lee leg lel len leo les let lgb lge lgg lgl lgn lgo lgs lgt llb lle llg lll lln llo lls llt lnb lne lng lnl lnn lno lns lnt lob loe log lol lon loo los lot lsb lse lsg lsl lsn lso lss lst ltb lte ltg ltl lto lts ltt nbb nbe nbg nbl nbn nbo nbs nbt ne- neb nee neg nel nen neo nes net ngb nge ngg ngl ngn ngo ngs ngt nlb nle nlg nll nln nlo nls nlt nnb nne nng nnl nnn nno nns nnt no- nob noe nog nol non noo nos not nsb nse nsg nsl nsn nso nss nst ntb nte ntg ntn nto nts ntt ob- obb obe obg obl obn obo obs obt oeb oee oeg oel oen oeo oes oet oge ogg ogl ogn ogo ogs ogt olb ole olg oll oln olo ols olt on- onb one ong onl onn ono ons ont oo- oob oog ool oon ooo oos oot os- osb ose osg osl osn oso oss ost ot- otb ote otg otl otn oto ots ott sbb sbe sbg sbl sbn sbo sbs sbt se- seb see seg sel sen seo ses set sgb sge sgg sgl sgn sgo sgs sgt slb sle slg sll sln slo sls slt snb sne sng snl snn sno sns snt sob soe sog sol son soo sos sot ss- ssb sse ssg ssl ssn sso sss sst stb ste stg stl stn sto sts stt tbb tbe tbg tbl tbn tbo tbs tbt te- teb tee teg tel ten teo tes tet tgb tge tgg tgl tgn tgo tgs tgt tle tlg tll tln tlo tls tlt tnb tne tng tnl tnn tno tns tnt to- tob toe tog tol ton too tos tot tsb tse tsg tsl tsn tso tss tst ttb tte ttg ttl ttn tto tts ttt