-ol b-p bbb bbe bbl bbo bbp be- beb bee bel beo bep blb ble bll blo blp bob boe bol boo bop bpb bpe bpl bpo bpp ebb ebe ebl ebo ebp eeb eee eel eeo eep elb ele ell elo elp eo- eob eoe eol eoo eop ep- epb epe epl epo epp l-p lbb lbe lbl lbo lbp leb lee lel leo lep llb lle lll llo llp lob loe lol loo lop lpb lpe lpl lpo lpp ob- obb obe obl obo obp oeb oee oel oeo oep olb ole oll olo olp oo- oob ool ooo oop op- opb ope opl opo opp p-p pbb pbe pbl pbo pbp peb pee pel peo pep plb ple pll plo plp pob poe pol poo pop ppb ppe ppl ppo ppp