-er -ey bbb bbe bbn bbo bbr bbt bby be- beb bee ben beo ber bet bev bey bnb bne bnn bno bnr bnt bnv bob boe bon boo bor bot bov boy brb bre brn bro brr brt brv bry btb bte btn bto btr btt btv bty bvb bve bvn bvo bvr bvt bvv by- bye byn byo byr byt ebb ebe ebn ebo ebr ebt ebv eby eeb eee een eeo eer eet eev eey en- enb ene enn eno enr ent env eny eo- eob eoe eon eoo eor eot erb ere ern ero err ert erv ery etb ete etn eto etr ett etv ety evb eve evn evo evr evt evv evy eye eyn eyo eyr eyt nbb nbe nbn nbo nbr nbt nbv ne- neb nee nen neo ner net nev ney nnb nne nnn nno nnt nnv no- nob noe non noo nor not nov noy nrb nre nrn nro nrr nrt nrv nry ntb nte ntn nto ntr ntt ntv nvb nve nvn nvt nvv nye nyn nyo nyt nyy ob- obb obe obn obo obr obt obv oby oeb oee oen oeo oer oet oey on- onb one onn ono onr ont ony oo- oob oon ooo oor oot oov or- orb ore orn oro orr ort orv ory ot- otb ote otn oto otr ott otv ov- ovb ove ovo ovv oye oyo rbb rbe rbn rbo rbr rbt re- reb ree ren reo rer ret rev rey rnb rnn rno rnr rnt rnv rny rob roe ron roo ror rot rov roy rrb rrn rrr rrt rtb rte rtn rto rtr rtt rtv rty rvb rve rvn rvo rvr rvt rvv rvy ry- rye ryn ryo ryr ryy tbb tbe tbn tbo tbr tbt tbv te- teb tee ten teo ter tet tev tey tnb tne tnn tno tnr tnt to- tob toe ton too tor tot tov toy trb tre trn tro trr trt trv try ttb tte ttn tto ttr ttt ttv tty tvb tve tvn tvo tvr tvt tvy tye tyn tyo tyr tyt v-e vbo vbr vbv veb vee ven veo ver vet vey vn- vno vnr vnv vob voe von voo vor vot vov voy vrb vre vrn vrr vrt vry vtb vte vto vtr vtt vtv vty vvb vvo vvr vvt vvv vye vyn vyt ybe ybr yby yeb yee yen yeo yer yet yev yey yne ynn yny yob yoe yon yoo yor yot yoy yre yrn yro yrt yte ytn yto ytr ytt ytv yve yvo yvr yvy yyb yye yyt yyy