-er b-p bbb bbc bbe bbf bbh bbk bbo bbp bbr bbs bcb bcc bce bcf bch bck bco bcp bcr bcs be- beb bec bee bef beh bek beo bep ber bes bfb bfc bfe bff bfh bfo bfp bfr bfs bhb bhc bhe bhf bhh bhk bho bhp bhr bhs bkb bkc bke bkf bkk bko bkp bkr bks bob boc boe bof boh bok boo bop bor bos bpb bpc bpe bpf bph bpo bpp bpr bps brb bre brf brh brk bro brp brr brs bsb bsc bse bsf bsh bsk bso bsp bsr bss c-- cbb cbc cbe cbf cbh cbk cbo cbp cbr cbs ccb ccc cce ccf cch cck cco ccp ccr ccs ce- ceb cec cee cef ceh cek ceo cep cer ces cfb cfc cfe cff cfh cfk cfo cfp cfr cfs ch- chb chc che chf chh chk cho chp chr chs ckb ckc ckh cko cks co- cob coc coe cof coh cok coo cop cor cos cpb cpc cpe cpf cph cpk cpo cpp cpr cps crb crc cre crf crh crk cro crp crr crs csb csc cse csf csh csk cso csp csr css ebb ebc ebe ebf ebh ebk ebo ebp ebr ebs ec- ecb ecc ece ecf ech eck eco ecr ecs eeb eec eee eef eek eeo eep eer ees ef- efb efc efe eff efh efo efp efr efs ehb ehc ehe ehf ehh eho ehp ehr ehs ekb ekc eke ekf ekh eko ekp ekr eks eo- eob eoc eoe eof eoh eok eoo eop eor eos ep- epb epc epe epf eph epo epp epr eps erb erc ere erf erh erk ero erp err ers es- esb esc ese esf esh esk eso esp esr ess fbb fbc fbe fbf fbh fbk fbo fbp fbr fbs fcb fcc fce fcf fck fco fcp fcr fcs feb fec fee fef feh fek feo fep fer fes ffc ffe fff ffh ffk ffo ffp ffr ffs fhb fhc fhe fhf fhh fho fhp fhr fhs fkb fkc fkf fkk fkp fob foc foe fof foh fok foo fop for fos fpb fpc fpe fph fpk fpo fpp fpr fps frb frc fre frf frh frk fro frp frr frs fsb fsc fse fsf fsh fsk fso fsp fsr fss hbb hbc hbe hbf hbh hbk hbo hbp hbr hbs hcb hcc hce hcf hch hck hco hcp hcr hcs he- heb hec hee hef heh hek heo hep her hes hfb hfc hfe hff hfh hfk hfo hfp hfr hfs hhb hhc hhe hhf hhh hhk hho hhp hhr hhs hkb hkf hkh hkk hko hkp hkr hks hob hoc hoe hof hoh hok hoo hop hor hos hpb hpc hpe hpf hph hpk hpo hpp hpr hps hr- hrb hrc hre hrf hrh hrk hro hrp hrr hrs hsb hsc hse hsf hsh hsk hsp hsr hss kbb kbc kbe kbf kbh kbk kbo kbp kbr kbs kcb kcc kce kch kck kcp kcr kcs ke- keb kec kee kef keh kek keo kep ker kes kfc kff kfh kfo kfs khe khf khh khk kho khr khs kkb kkc kke kkh kkk kkp kkr kks kob koc koe kof koh kok koo kop kor kos kpc kpe kpf kph kpk kpo kpp kpr kps krc krf krk kro krp krr krs ksb ksc kse ksf ksh ksk kso ksp ksr kss ob- obb obc obe obf obh obk obo obp obr obs oc- ocb occ ocf och ock oco ocp ocr ocs oeb oec oee oef oeh oeo oep oer oes of- ofb ofc ofe off ofo ofp ofr ofs ohc ohe ohf ohh oho ohp ohr ohs okb okc oke okk oko okp okr oks oo- oob ooc oof ooh ook ooo oop oor oos op- opb opc ope opf oph opk opo opp opr ops or- orb orc ore orf orh ork oro orp orr ors os- osb osc ose osf osh osk oso osp osr oss p-p pbb pbc pbe pbf pbk pbo pbp pbr pbs pcb pcc pce pcf pch pck pco pcp pcr pcs peb pec pee pef peh pek peo pep per pes pfb pfc pfe pff pfk pfo pfp pfr pfs phb phc phe phf phk pho php phr phs pkb pkc pke pkf pko pkp pkr pks pob poc poe pof poh pok poo pop por pos ppb ppc ppe ppf pph ppk ppo ppp ppr pps prb prc pre prf prh prk pro prp prr prs ps- psb psc pse psf psh psk pso psp psr pss rbb rbc rbe rbf rbh rbk rbo rbp rbr rbs rcb rcc rce rcf rch rco rcp rcr rcs re- reb rec ree ref reh rek reo rep rer res rfb rfc rfe rff rfh rfk rfo rfp rfr rfs rh- rhb rhc rhe rhf rhh rho rhp rhr rhs rkb rkc rke rkf rkk rko rkp rks rob roc roe rof roh rok roo rop ror ros rpb rpc rpe rpf rph rpk rpo rpp rpr rps rrb rrc rrf rrh rrk rrp rrr rrs rsb rsc rse rsf rsh rsk rso rsp rsr rss sbb sbc sbe sbf sbh sbk sbo sbp sbr sbs scb scc sce scf sch sck sco scp scr scs se- seb sec see sef seh sek seo sep ser ses sfb sfc sfe sff sfh sfk sfo sfp sfr sfs sh- shb shc she shf shh shk sho shp shr shs sk- skb skc ske skf skh skk sko skp skr sks sob soc soe sof soh sok soo sop sor sos spb spc spe spf sph spk spo spp spr sps sr- srb src sre srf srh srk sro srp srr srs ss- ssb ssc sse ssf ssh ssk sso ssp ssr sss

-ose bbbb bbbs bbch bbeb bbfc bbhs bbpr bbrc bcbc bcbp bcbs bccc bccs bcec bcer bces bcfc bche bchs bcof bcor bcos bcpp bcps bcrs bcsc bcss bebb bebe bebo bech