-er -ey b-u bbb bbe bbi bbn bbr bbu bby be- beb bee bei ben ber beu bey bi- bib bie bii bin bir biu biy bnb bne bni bnn bnr bnu brb bre bri brn brr bru bry bub bue bui bun bur buu buy by- bye byi byn byr byu ebb ebe ebi ebn ebr ebu eby eeb eee een eer eey eib eie eii ein eir eiu en- enb ene eni enn enr enu eny erb ere eri ern err eru ery eu- eub eue eui eun eur eye eyn eyr ibb ibe ibi ibn ibr ibu iby ie- iee iei ien ier iey iib iie iii iin iir iiu in- inb ine ini inn inr inu iny ir- irb ire iri irn irr iru iry iu- iub iue iui iur iye iyr iyy n-i nbb nbe nbi nbn nbr nbu ne- neb nee nei nen ner neu ney nib nie nii nin nir niu nnb nne nni nnn nnu nrb nre nri nrn nrr nru nry nub nue nui nun nur nuu nuy nye nyn nyu nyy rbb rbe rbi rbn rbr rbu re- reb ree rei ren rer reu rey rib rie rii rin rir riy rnb rni rnn rnr rnu rny rrb rri rrn rrr rru rub rue rui run rur ruu ruy ry- rye ryn ryr ryu ryy ubb ube ubi ubn ubr ubu uby ueb uee uei uen uer uey uib uie uii uin uir uiu un- unb une uni unn unr unu uny ur- urb ure uri urn urr uru ury uue uun uur uuu uyi uyu ybe ybi ybr yby yeb yee yei yen yer yey yie yii yin yir yne ynn ynu yny yre yrn yru yue yui yun yur yuu yuy yyb yye yyu yyy