-er bbb bbd bbe bbi bbn bbr bdb bdd bde bdi bdr bdz be- beb bed bee bei ben ber bez bi- bib bid bie bii bin bir biz bnb bnd bne bni bnn bnr bnz brb brd bre bri brn brr brz bzd bze bzn bzr bzz dbb dbd dbe dbi dbn dbr dbz ddb ddd dde ddi ddn ddr ddz de- deb ded dee dei den der dez di- dib did die dii din dir diz dnb dnd dne dni dnn dnr dnz drb drd dre dri drn drr drz dzb dzd dze dzi dzr ebb ebd ebe ebi ebn ebr ed- edb edd ede edi edn edr eeb eed eee een eer eib eid eie eii ein eir en- enb end ene eni enn enr enz erb erd ere eri ern err erz eze ezr ezz i-d ibb ibd ibe ibi ibn ibr ibz idb idd ide idi idn idr ie- ied iee iei ien ier iib iid iie iii iin iir in- inb ind ine ini inn inr ir- irb ird ire iri irn irr ize izi izz n-i nbb nbd nbe nbi nbn nbr ndb ndd nde ndi ndn ndr ne- neb ned nee nei nen ner nez nib nid nie nii nin nir niz nnb nne nni nnn nnz nrb nrd nre nri nrn nrr nrz nzb nzd nze nzi nzz rbb rbd rbe rbi rbn rbr rdb rdd rde rdi rdn rdr re- reb red ree rei ren rer rez rib rid rie rii rin rir riz rnb rnd rni rnn rnr rnz rrb rrd rri rrn rrr rzb rze zbb zbr zeb zed zee zen zer zez zib zid zie zin zir ziz znd zne znn zzr zzz