-ol b-p bbb bbe bbk bbl bbn bbo bbp be- beb bee bek bel ben beo bep bkb bke bkk bkl bkn bko bkp blb ble blk bll bln blo blp bnb bne bnk bnl bnn bno bnp bob boe bok bol bon boo bop bpb bpe bpl bpn bpo bpp ebb ebe ebk ebl ebn ebo ebp eeb eee eek eel een eeo eep ekb eke ekl eko ekp elb ele elk ell eln elo elp en- enb ene enk enl enn eno enp eo- eob eoe eok eol eon eoo eop ep- epb epe epl epn epo epp kbb kbe kbk kbl kbn kbo kbp ke- keb kee kek kel ken keo kep kkb kke kkk kkl kkn kkp kl- klb klo kn- kne knk knl knn kno knp kob koe kok kol kon koo kop kpe kpk kpl kpn kpo kpp l-p lbb lbe lbk lbl lbo lbp leb lee lek lel len leo lep lkb lkl lkp llb lle llk lll lln llo llp lnb lne lnk lnl lnn lno lnp lob loe lok lol lon loo lop lpb lpe lpk lpl lpn lpo lpp nbb nbe nbk nbl nbn nbo nbp ne- neb nee nek nel nen neo nep nke nkk nkn nko nkp nlb nle nlk nll nln nlo nlp nnb nne nnk nnl nnn nno nnp no- nob noe nok nol non noo nop npb npe npl npn npo npp ob- obb obe obk obl obn obo obp oeb oee oel oen oeo oep okb oke okk okl oko okp olb ole olk oll oln olo olp on- onb one onk onl onn ono onp oo- oob ook ool oon ooo oop op- opb ope opk opl opn opo opp p-p pbb pbe pbk pbl pbn pbo pbp peb pee pek pel pen peo pep pkb pke pkl pkn pko pkp plb ple plk pll pln plo plp pn- pnb pne pnk pnl pnn pno pnp pob poe pok pol pon poo pop ppb ppe ppk ppl ppn ppo ppp