-er -ey b-u bbb bbe bbn bbr bbt bbu bby be- beb bee ben ber bet beu bey bnb bne bnn bnr bnt bnu brb bre brn brr brt bru bry btb bte btn btr btt btu bty bub bue bun bur but buu buy by- bye byn byr byt byu ebb ebe ebn ebr ebt ebu eby eeb eee een eer eet eey en- enb ene enn enr ent enu eny erb ere ern err ert eru ery etb ete etn etr ett etu ety eu- eub eue eun eur eut eye eyn eyr eyt nbb nbe nbn nbr nbt nbu ne- neb nee nen ner net neu ney nnb nne nnn nnt nnu nrb nre nrn nrr nrt nru nry ntb nte ntn ntr ntt ntu nub nue nun nur nut nuu nuy nye nyn nyt nyu nyy rbb rbe rbn rbr rbt rbu re- reb ree ren rer ret reu rey rnb rnn rnr rnt rnu rny rrb rrn rrr rrt rru rtb rte rtn rtr rtt rtu rty rub rue run rur rut ruu ruy ry- rye ryn ryr ryu ryy tbb tbe tbn tbr tbt tbu te- teb tee ten ter tet teu tey tnb tne tnn tnr tnt trb tre trn trr trt tru try ttb tte ttn ttr ttt ttu tty tub tue tun tur tut tuu tuy tye tyn tyr tyt ubb ube ubn ubr ubt ubu uby ueb uee uen uer uet uey un- unb une unn unr unt unu uny ur- urb ure urn urr urt uru ury utb ute utn utr utt utu uty uue uun uur uut uuu uyu ybe ybr yby yeb yee yen yer yet yey yne ynn ynu yny yre yrn yrt yru yte ytn ytr ytt ytu yue yun yur yut yuu yuy yyb yye yyt yyu yyy