-ol b-p bbb bbe bbf bbi bbk bbl bbo bbp bbs be- beb bee bef bei bek bel beo bep bes bfb bfe bff bfi bfl bfo bfp bfs bi- bib bie bif bii bik bil bio bip bis bkb bke bkf bkk bkl bko bkp bks blb ble blf bli blk bll blo blp bls bob boe bof boi bok bol boo bop bos bpb bpe bpf bpi bpl bpo bpp bps bsb bse bsf bsi bsk bsl bso bsp bss ebb ebe ebf ebi ebk ebl ebo ebp ebs eeb eee eef eek eel eeo eep ees ef- efb efe eff efi efl efo efp efs eib eie eif eii eik eil eio eip eis ekb eke ekf eki ekl eko ekp eks elb ele elf eli elk ell elo elp els eo- eob eoe eof eoi eok eol eoo eop eos ep- epb epe epf epi epl epo epp eps es- esb ese esf esi esk esl eso esp ess fbb fbe fbf fbi fbk fbl fbo fbp fbs feb fee fef fei fek fel feo fep fes ffe fff ffi ffk ffl ffo ffp ffs fib fie fif fii fik fil fip fis fkb fkf fki fkk fkl fkp flb fle flf fli fll flo flp fls fob foe fof foi fok fol foo fop fos fpb fpe fpi fpk fpl fpo fpp fps fsb fse fsf fsi fsk fsl fso fsp fss i-f ibb ibe ibf ibi ibk ibl ibo ibp ibs ie- iee ief iei iek iel iep ies ifb ife iff ifi ifl ifo ifp ifs iib iie iif iii iil iio iip iis ikb ike ikf iki ikk ikl iko iks il- ilb ile ilf ili ilk ill ilo ilp ils io- iob ioe iof ioi iol ioo iop ios ipb ipe ipf ipi ipl ipo ipp ips is- isb ise isf isi isk isl iso isp iss kbb kbe kbf kbi kbk kbl kbo kbp kbs ke- keb kee kef kei kek kel keo kep kes kff kfi kfo kfs kib kie kif kii kik kil kio kip kis kkb kke kki kkk kkl kkp kks kl- klb klf kli klo kls kob koe kof koi kok kol koo kop kos kpe kpf kpi kpk kpl kpo kpp kps ksb kse ksf ksi ksk ksl kso ksp kss l-p lbb lbe lbf lbi lbk lbl lbo lbp lbs leb lee lef lei lek lel leo lep les lfb lfe lff lfi lfk lfl lfo lfp lfs lib lie lif lii lik lil lio lip lis lkb lkl lkp lks llb lle llf lli llk lll llo llp lls lob loe lof loi lok lol loo lop los lpb lpe lpf lpi lpk lpl lpo lpp lps lsb lse lsf lsi lsk lsl lso lsp lss o-i ob- obb obe obf obi obk obl obo obp obs oeb oee oef oei oel oeo oep oes of- ofb ofe off ofi ofl ofo ofp ofs oib oie oif oii oik oil oio oip ois okb oke oki okk okl oko okp oks olb ole olf oli olk oll olo olp ols oo- oob oof ooi ook ool ooo oop oos op- opb ope opf opi opk opl opo opp ops os- osb ose osf osi osk osl oso osp oss p-p pbb pbe pbf pbi pbk pbl pbo pbp pbs peb pee pef pei pek pel peo pep pes pfb pfe pff pfi pfk pfl pfo pfp pfs pib pie pif pii pik pil pio pip pis pkb pke pkf pki pkl pko pkp pks plb ple plf pli plk pll plo plp pls pob poe pof poi pok pol poo pop pos ppb ppe ppf ppi ppk ppl ppo ppp pps ps- psb pse psf psi psk psl pso psp pss sbb sbe sbf sbi sbk sbl sbo sbp sbs se- seb see sef sei sek sel seo sep ses sfb sfe sff sfi sfk sfl sfo sfp sfs sib sie sif sii sik sil sio sip sis sk- skb ske skf ski skk skl sko skp sks slb sle slf sli slk sll slo slp sls sob soe sof soi sok sol soo sop sos spb spe spf spi spk spl spo spp sps ss- ssb sse ssf ssi ssk ssl sso ssp sss