-ol b-p bbb bbe bbl bbo bbp bbt be- beb bee bel beo bep bet blb ble bll blo blp blt bob boe bol boo bop bot bpb bpe bpl bpo bpp bpt btb bte btl bto btp btt ebb ebe ebl ebo ebp ebt eeb eee eel eeo eep eet elb ele ell elo elp elt eo- eob eoe eol eoo eop eot ep- epb epe epl epo epp ept etb ete etl eto etp ett l-p lbb lbe lbl lbo lbp lbt leb lee lel leo lep let llb lle lll llo llp llt lob loe lol loo lop lot lpb lpe lpl lpo lpp lpt ltb lte ltl lto ltp ltt ob- obb obe obl obo obp obt oeb oee oel oeo oep oet olb ole oll olo olp olt oo- oob ool ooo oop oot op- opb ope opl opo opp opt ot- otb ote otl oto otp ott p-p pbb pbe pbl pbo pbp pbt peb pee pel peo pep pet plb ple pll plo plp plt pob poe pol poo pop pot ppb ppe ppl ppo ppp ppt pt- ptb pte ptl pto ptp ptt tbb tbe tbl tbo tbp tbt te- teb tee tel teo tep tet tle tll tlo tlp tlt to- tob toe tol too top tot tpb tpe tpl tpo tpp tpt ttb tte ttl tto ttp ttt