-er bbb bbe bbh bbn bbr be- beb bee beh ben ber bez bhb bhe bhh bhr bnb bne bnn bnr bnz brb bre brh brn brr brz bze bzh bzn bzr bzz ebb ebe ebh ebn ebr eeb eee een eer ehb ehe ehh ehn ehr en- enb ene enh enn enr enz erb ere erh ern err erz eze ezh ezr ezz hbb hbe hbh hbn hbr hbz he- heb hee heh hen her hez hhb hhe hhh hhn hhr hhz hnb hne hnh hnn hnz hr- hrb hre hrh hrn hrr hrz hze nbb nbe nbn nbr ne- neb nee neh nen ner nez nhb nhe nhh nhn nhr nhz nnb nne nnh nnn nnz nrb nre nrn nrr nrz nzb nze nzz rbb rbe rbh rbn rbr re- reb ree reh ren rer rez rh- rhb rhe rhh rhn rhr rnb rnh rnn rnr rnz rrb rrh rrn rrr rzb rze zbb zbr zeb zee zeh zen zer zez zhe zhr zne znn zrh zzr zzz