-ol b-p bbb bbe bbk bbl bbn bbo bbp bbs be- beb bee bek bel ben beo bep bes bkb bke bkk bkl bkn bko bkp bks blb ble blk bll bln blo blp bls bnb bne bnk bnl bnn bno bnp bns bob boe bok bol bon boo bop bos bpb bpe bpl bpn bpo bpp bps bsb bse bsk bsl bsn bso bsp bss ebb ebe ebk ebl ebn ebo ebp ebs eeb eee eek eel een eeo eep ees ekb eke ekl eko ekp eks elb ele elk ell eln elo elp els en- enb ene enk enl enn eno enp ens eo- eob eoe eok eol eon eoo eop eos ep- epb epe epl epn epo epp eps es- esb ese esk esl esn eso esp ess kbb kbe kbk kbl kbn kbo kbp kbs ke- keb kee kek kel ken keo kep kes kkb kke kkk kkl kkn kkp kks kl- klb klo kls kn- kne knk knl knn kno knp kob koe kok kol kon koo kop kos kpe kpk kpl kpn kpo kpp kps ksb kse ksk ksl ksn kso ksp kss l-p lbb lbe lbk lbl lbo lbp lbs leb lee lek lel len leo lep les lkb lkl lkp lks llb lle llk lll lln llo llp lls lnb lne lnk lnl lnn lno lnp lns lob loe lok lol lon loo lop los lpb lpe lpk lpl lpn lpo lpp lps lsb lse lsk lsl lsn lso lsp lss nbb nbe nbk nbl nbn nbo nbp nbs ne- neb nee nek nel nen neo nep nes nke nkk nkn nko nkp nks nlb nle nlk nll nln nlo nlp nls nnb nne nnk nnl nnn nno nnp nns no- nob noe nok nol non noo nop nos npb npe npl npn npo npp nps nsb nse nsk nsl nsn nso nsp nss ob- obb obe obk obl obn obo obp obs oeb oee oel oen oeo oep oes okb oke okk okl oko okp oks olb ole olk oll oln olo olp ols on- onb one onk onl onn ono onp ons oo- oob ook ool oon ooo oop oos op- opb ope opk opl opn opo opp ops os- osb ose osk osl osn oso osp oss p-p pbb pbe pbk pbl pbn pbo pbp pbs peb pee pek pel pen peo pep pes pkb pke pkl pkn pko pkp pks plb ple plk pll pln plo plp pls pn- pnb pne pnk pnl pnn pno pnp pns pob poe pok pol pon poo pop pos ppb ppe ppk ppl ppn ppo ppp pps ps- psb pse psk psl psn pso psp pss sbb sbe sbk sbl sbn sbo sbp sbs se- seb see sek sel sen seo sep ses sk- skb ske skk skl sko skp sks slb sle slk sll sln slo slp sls snb sne snk snl snn sno snp sns sob soe sok sol son soo sop sos spb spe spk spl spn spo spp sps ss- ssb sse ssk ssl ssn sso ssp sss