-er -ey bbb bbe bbi bbn bbr bby be- beb bee bei ben ber bey bez bi- bib bie bii bin bir biy biz bnb bne bni bnn bnr bnz brb bre bri brn brr bry brz by- bye byi byn byr byz bze bzn bzr bzz ebb ebe ebi ebn ebr eby eeb eee een eer eey eib eie eii ein eir en- enb ene eni enn enr eny enz erb ere eri ern err ery erz eye eyn eyr eze ezr ezz ibb ibe ibi ibn ibr iby ibz ie- iee iei ien ier iey iib iie iii iin iir in- inb ine ini inn inr iny ir- irb ire iri irn irr iry iye iyr iyy ize izi izy izz n-i nbb nbe nbi nbn nbr ne- neb nee nei nen ner ney nez nib nie nii nin nir niz nnb nne nni nnn nnz nrb nre nri nrn nrr nry nrz nye nyn nyy nzb nze nzi nzz rbb rbe rbi rbn rbr re- reb ree rei ren rer rey rez rib rie rii rin rir riy riz rnb rni rnn rnr rny rnz rrb rri rrn rrr ry- rye ryn ryr ryy ryz rzb rze rzy ybe ybi ybr yby ybz yeb yee yei yen yer yey yez yie yii yin yir yiz yne ynn yny yre yrn yyb yye yyy yyz yzb yzr yzy zbb zbr zby zeb zee zen zer zez zib zie zin zir ziz zne znn zzr zzy zzz