-er bbb bbe bbh bbk bbn bbr bbs be- beb bee beh bek ben ber bes bhb bhe bhh bhk bhr bhs bkb bke bkk bkn bkr bks bnb bne bnk bnn bnr bns brb bre brh brk brn brr brs bsb bse bsh bsk bsn bsr bss ebb ebe ebh ebk ebn ebr ebs eeb eee eek een eer ees ehb ehe ehh ehn ehr ehs ekb eke ekh ekr eks en- enb ene enh enk enn enr ens erb ere erh erk ern err ers es- esb ese esh esk esn esr ess hbb hbe hbh hbk hbn hbr hbs he- heb hee heh hek hen her hes hhb hhe hhh hhk hhn hhr hhs hkb hkh hkk hkn hkr hks hnb hne hnh hnk hnn hns hr- hrb hre hrh hrk hrn hrr hrs hsb hse hsh hsk hsn hsr hss kbb kbe kbh kbk kbn kbr kbs ke- keb kee keh kek ken ker kes khe khh khk khn khr khs kkb kke kkh kkk kkn kkr kks kn- kne knk knn knr krk krn krr krs ksb kse ksh ksk ksn ksr kss nbb nbe nbk nbn nbr nbs ne- neb nee neh nek nen ner nes nhb nhe nhh nhk nhn nhr nhs nke nkk nkn nkr nks nnb nne nnh nnk nnn nns nrb nre nrk nrn nrr nrs nsb nse nsh nsk nsn nsr nss rbb rbe rbh rbk rbn rbr rbs re- reb ree reh rek ren rer res rh- rhb rhe rhh rhn rhr rhs rkb rke rkk rks rnb rnh rnn rnr rns rrb rrh rrk rrn rrr rrs rsb rse rsh rsk rsn rsr rss sbb sbe sbh sbk sbn sbr sbs se- seb see seh sek sen ser ses sh- shb she shh shk shn shr shs sk- skb ske skh skk skr sks snb sne snk snn snr sns sr- srb sre srh srk srn srr srs ss- ssb sse ssh ssk ssn ssr sss