-er -ey b-u bbb bbe bbi bbo bbr bbu bby be- beb bee bei beo ber beu bev bey bi- bib bie bii bio bir biu biv biy bob boe boi boo bor bou bov boy brb bre bri bro brr bru brv bry bub bue bui buo bur buu buy bvb bve bvi bvo bvr bvu bvv by- bye byi byo byr byu ebb ebe ebi ebo ebr ebu ebv eby eeb eee eeo eer eev eey eib eie eii eio eir eiu eiv eo- eob eoe eoi eoo eor eou erb ere eri ero err eru erv ery eu- eub eue eui eur euv evb eve evi evo evr evv evy eye eyo eyr i-v ibb ibe ibi ibo ibr ibu ibv iby ie- iee iei ier iev iey iib iie iii iio iir iiu io- iob ioe ioi ioo ior iou iov ir- irb ire iri iro irr iru irv iry iu- iub iue iui iur ivb ive ivi ivo ivr ivu ivv ivy iye iyo iyr iyy o-i ob- obb obe obi obo obr obu obv oby oeb oee oei oeo oer oey oib oie oii oio oir oiu oiv oo- oob ooi ooo oor oov or- orb ore ori oro orr oru orv ory ou- oue oui ouo our ov- ovb ove ovi ovo ovv oye oyi oyo rbb rbe rbi rbo rbr rbu re- reb ree rei reo rer reu rev rey rib rie rii rio rir riv riy rob roe roi roo ror rou rov roy rrb rri rrr rru rub rue rui ruo rur ruu ruv ruy rvb rve rvi rvo rvr rvu rvv rvy ry- rye ryo ryr ryu ryy ubb ube ubi ubo ubr ubu ubv uby ueb uee uei uer uey uib uie uii uio uir uiu uob uoe uoo uor ur- urb ure uri uro urr uru ury uue uur uuu uvb uve uvo uvu uvv uyi uyo uyu v-e vbi vbo vbr vbv veb vee vei veo ver veu vey vi- vib vie vii vio vir viu viv viy vob voe voi voo vor vou vov voy vrb vre vri vrr vru vry vue vur vuv vvb vvi vvo vvr vvv vye ybe ybi ybr yby yeb yee yei yeo yer yev yey yie yii yio yir yob yoe yoi yoo yor you yoy yre yro yru yue yui yuo yur yuu yuv yuy yve yvi yvo yvr yvy yyb yye yyu yyy