-ol bbb bbe bbf bbl bbm bbo bbt be- beb bee bef bel bem beo bet bfb bfe bff bfl bfm bfo bft blb ble blf bll blm blo blt bmb bme bmf bml bmm bmo bmt bob boe bof bol bom boo bot btb bte btf btl btm bto btt ebb ebe ebf ebl ebm ebo ebt eeb eee eef eel eem eeo eet ef- efb efe eff efl efm efo eft elb ele elf ell elm elo elt em- emb eme emf eml emm emo emt eo- eob eoe eof eol eom eoo eot etb ete etf etl etm eto ett fbb fbe fbf fbl fbm fbo fbt feb fee fef fel fem feo fet ffe fff ffl ffm ffo fft flb fle flf fll flm flo flt fmb fme fmf fml fmm fmo fmt fob foe fof fol fom foo fot ftb fte ftf ftl ftm fto ftt lbb lbe lbf lbl lbm lbo lbt leb lee lef lel lem leo let lfb lfe lff lfl lfm lfo lft llb lle llf lll llm llo llt lmb lme lmf lml lmm lmo lmt lob loe lof lol lom loo lot ltb lte ltf ltl ltm lto ltt m-f m-o mbb mbe mbf mbl mbm mbo mbt meb mee mef mel mem meo met mfb mfe mff mfl mfm mfo mft mlb mle mlf mll mlm mlo mlt mmb mme mmf mml mmm mmo mmt mob moe mof mol mom moo mot mtb mte mtf mtl mtm mto mtt ob- obb obe obf obl obm obo obt oeb oee oef oel oem oeo oet of- ofb ofe off ofl ofm ofo oft olb ole olf oll olm olo olt om- omb ome omf oml omm omo omt oo- oob oof ool oom ooo oot ot- otb ote otf otl otm oto ott tbb tbe tbf tbl tbm tbo tbt te- teb tee tef tel tem teo tet tfb tfe tff tfl tfm tfo tft tle tlf tll tlm tlo tlt tmb tme tmf tml tmm tmo tmt to- tob toe tof tol tom too tot ttb tte ttf ttl ttm tto ttt