-ol bbb bbe bbg bbl bbm bbo bbs bbt be- beb bee beg bel bem beo bes bet bgb bge bgg bgl bgm bgo bgs bgt blb ble blg bll blm blo bls blt bmb bme bmg bml bmm bmo bms bmt bob boe bog bol bom boo bos bot bsb bse bsg bsl bsm bso bss bst btb bte btg btl btm bto bts btt ebb ebe ebg ebl ebm ebo ebs ebt eeb eee eeg eel eem eeo ees eet egb ege egg egl egm ego egs egt elb ele elg ell elm elo els elt em- emb eme emg eml emm emo ems emt eo- eob eoe eog eol eom eoo eos eot es- esb ese esg esl esm eso ess est etb ete etg etl etm eto ets ett gbe gbg gbl gbm gbo gbs gbt ge- geb gee geg gel gem geo ges get ggb ggg ggm ggo ggs ggt glb gle glg gll glm glo gls glt gmb gme gmg gml gmm gmo gms gmt gob goe gog gol gom goo gos got gsb gse gsg gsl gsm gso gss gst gtb gte gtg gtl gtm gto gts gtt lbb lbe lbg lbl lbm lbo lbs lbt leb lee leg lel lem leo les let lgb lge lgg lgl lgm lgo lgs lgt llb lle llg lll llm llo lls llt lmb lme lmg lml lmm lmo lms lmt lob loe log lol lom loo los lot lsb lse lsg lsl lsm lso lss lst ltb lte ltg ltl ltm lto lts ltt m-o mbb mbe mbg mbl mbm mbo mbs mbt meb mee meg mel mem meo mes met mgb mge mgl mgm mgo mgs mgt mlb mle mlg mll mlm mlo mls mlt mmb mme mmg mml mmm mmo mms mmt mob moe mog mol mom moo mos mot msb mse msg msl msm mso mss mst mtb mte mtg mtl mtm mto mts mtt ob- obb obe obg obl obm obo obs obt oeb oee oeg oel oem oeo oes oet oge ogg ogl ogo ogs ogt olb ole olg oll olm olo ols olt om- omb ome omg oml omm omo oms omt oo- oob oog ool oom ooo oos oot os- osb ose osg osl osm oso oss ost ot- otb ote otg otl otm oto ots ott sbb sbe sbg sbl sbm sbo sbs sbt se- seb see seg sel sem seo ses set sgb sge sgg sgl sgm sgo sgs sgt slb sle slg sll slm slo sls slt smb sme smg sml smm smo sms smt sob soe sog sol som soo sos sot ss- ssb sse ssg ssl ssm sso sss sst stb ste stg stl stm sto sts stt tbb tbe tbg tbl tbm tbo tbs tbt te- teb tee teg tel tem teo tes tet tgb tge tgg tgl tgm tgo tgs tgt tle tlg tll tlm tlo tls tlt tmb tme tmg tml tmm tmo tms tmt to- tob toe tog tol tom too tos tot tsb tse tsg tsl tsm tso tss tst ttb tte ttg ttl ttm tto tts ttt