-ol b-p bbb bbc bbd bbe bbk bbl bbo bbp bcb bcc bcd bce bck bcl bco bcp bdb bdc bdd bde bdk bdl bdo bdp be- beb bec bed bee bek bel beo bep bkb bkc bke bkk bkl bko bkp blb blc bld ble blk bll blo blp bob boc bod boe bok bol boo bop bpb bpc bpd bpe bpl bpo bpp c-- cbb cbc cbd cbe cbk cbl cbo cbp ccb ccc ccd cce cck ccl cco ccp cdb cdc cdd cde cdk cdl cdo cdp ce- ceb cec ced cee cek cel ceo cep ckb ckc ckd cko cl- clb clc cld cle clk cll clo clp co- cob coc cod coe cok col coo cop cpb cpc cpd cpe cpk cpl cpo cpp dbb dbc dbd dbe dbk dbl dbo dbp dcb dcc dcd dce dck dcl dco dcp ddb ddc ddd dde ddk ddl ddo ddp de- deb dec ded dee dek del deo dep dkb dkc dke dkk dkl dko dkp dl- dlb dlc dld dle dlk dll dlo dlp dob doc dod doe dok dol doo dop dpb dpc dpd dpe dpk dpl dpo dpp ebb ebc ebd ebe ebk ebl ebo ebp ec- ecb ecc ecd ece eck ecl eco ed- edb edc edd ede edk edl edo edp eeb eec eed eee eek eel eeo eep ekb ekc ekd eke ekl eko ekp elb elc eld ele elk ell elo elp eo- eob eoc eod eoe eok eol eoo eop ep- epb epc epd epe epl epo epp kbb kbc kbd kbe kbk kbl kbo kbp kcb kcc kcd kce kck kcl kcp kdb kdc kde kdk kdl kdo kdp ke- keb kec ked kee kek kel keo kep kkb kkc kke kkk kkl kkp kl- klb klc kld klo kob koc kod koe kok kol koo kop kpc kpd kpe kpk kpl kpo kpp l-p lbb lbc lbd lbe lbk lbl lbo lbp lcb lcc lcd lce lck lcl lco lcp ldb ldc ldd lde ldk ldl ldo ldp leb lec led lee lek lel leo lep lkb lkl lkp llb llc lld lle llk lll llo llp lob loc lod loe lok lol loo lop lpb lpc lpd lpe lpk lpl lpo lpp ob- obb obc obd obe obk obl obo obp oc- ocb occ ocd ock ocl oco ocp odb odc odd ode odl odo odp oeb oec oed oee oel oeo oep okb okc okd oke okk okl oko okp olb olc old ole olk oll olo olp oo- oob ooc ood ook ool ooo oop op- opb opc opd ope opk opl opo opp p-p pbb pbc pbd pbe pbk pbl pbo pbp pcb pcc pcd pce pck pcl pco pcp pdb pdc pdd pde pdk pdl pdo pdp peb pec ped pee pek pel peo pep pkb pkc pkd pke pkl pko pkp plb plc pld ple plk pll plo plp pob poc pod poe pok pol poo pop ppb ppc ppd ppe ppk ppl ppo ppp