bbb bbe bbh bbn bbs bbx be- beb bee beh ben bes bex bhb bhe bhh bhs bhx bnb bne bnn bns bnx bsb bse bsh bsn bss bsx bxb bxn bxx ebb ebe ebh ebn ebs ebx eeb eee een ees eex ehb ehe ehh ehn ehs en- enb ene enh enn ens es- esb ese esh esn ess esx ex- exe exh exs exx hbb hbe hbh hbn hbs hbx he- heb hee heh hen hes hex hhb hhe hhh hhn hhs hnb hne hnh hnn hns hsb hse hsh hsn hss hsx nbb nbe nbn nbs nbx ne- neb nee neh nen nes nex nhb nhe nhh nhn nhs nnb nne nnh nnn nns nsb nse nsh nsn nss nsx sbb sbe sbh sbn sbs sbx se- seb see seh sen ses sex sh- shb she shh shn shs snb sne snn sns ss- ssb sse ssh ssn sss ssx sxn sxs xbe xbx xee xen xes xex xns xsb xss xxx