-er -ey bbb bbe bbn bbo bbr bbt bby be- beb bee ben beo ber bet bey bnb bne bnn bno bnr bnt bob boe bon boo bor bot boy brb bre brn bro brr brt bry btb bte btn bto btr btt bty by- bye byn byo byr byt ebb ebe ebn ebo ebr ebt eby eeb eee een eeo eer eet eey en- enb ene enn eno enr ent eny eo- eob eoe eon eoo eor eot erb ere ern ero err ert ery etb ete etn eto etr ett ety eye eyn eyo eyr eyt nbb nbe nbn nbo nbr nbt ne- neb nee nen neo ner net ney nnb nne nnn nno nnt no- nob noe non noo nor not noy nrb nre nrn nro nrr nrt nry ntb nte ntn nto ntr ntt nye nyn nyo nyt nyy ob- obb obe obn obo obr obt oby oeb oee oen oeo oer oet oey on- onb one onn ono onr ont ony oo- oob oon ooo oor oot or- orb ore orn oro orr ort ory ot- otb ote otn oto otr ott oye oyo rbb rbe rbn rbo rbr rbt re- reb ree ren reo rer ret rey rnb rnn rno rnr rnt rny rob roe ron roo ror rot roy rrb rrn rrr rrt rtb rte rtn rto rtr rtt rty ry- rye ryn ryo ryr ryy tbb tbe tbn tbo tbr tbt te- teb tee ten teo ter tet tey tnb tne tnn tno tnr tnt to- tob toe ton too tor tot toy trb tre trn tro trr trt try ttb tte ttn tto ttr ttt tty tye tyn tyo tyr tyt ybe ybr yby yeb yee yen yeo yer yet yey yne ynn yny yob yoe yon yoo yor yot yoy yre yrn yro yrt yte ytn yto ytr ytt yyb yye yyt yyy