-er -ey bbb bbe bbi bbo bbr bbt bby be- beb bee bei beo ber bet bey bi- bib bie bii bio bir bit biy bob boe boi boo bor bot boy brb bre bri bro brr brt bry btb bte bti bto btr btt bty by- bye byi byo byr byt ebb ebe ebi ebo ebr ebt eby eeb eee eeo eer eet eey eib eie eii eio eir eit eo- eob eoe eoi eoo eor eot erb ere eri ero err ert ery etb ete eti eto etr ett ety eye eyo eyr eyt ibb ibe ibi ibo ibr ibt iby ie- iee iei ier iet iey iib iie iii iio iir iit io- iob ioe ioi ioo ior iot ir- irb ire iri iro irr irt iry itb ite iti ito itt ity iye iyo iyr iyt iyy o-i ob- obb obe obi obo obr obt oby oeb oee oei oeo oer oet oey oib oie oii oio oir oit oo- oob ooi ooo oor oot or- orb ore ori oro orr ort ory ot- otb ote oti oto otr ott oye oyi oyo rbb rbe rbi rbo rbr rbt re- reb ree rei reo rer ret rey rib rie rii rio rir rit riy rob roe roi roo ror rot roy rrb rri rrr rrt rtb rte rti rto rtr rtt rty ry- rye ryo ryr ryy tbb tbe tbi tbo tbr tbt te- teb tee tei teo ter tet tey tib tie tii tio tir tit tiy to- tob toe toi too tor tot toy trb tre tri tro trr trt try ttb tte tti tto ttr ttt tty tye tyo tyr tyt ybe ybi ybr yby yeb yee yei yeo yer yet yey yie yii yio yir yit yob yoe yoi yoo yor yot yoy yre yro yrt yte yto ytr ytt yyb yye yyt yyy

bbbb bbeb bbet bboy bbyo bebb bebe bebi bebo beby beeb beer beet beey beir beit beo- beor beot bere beri bero berr bert bery bete beti beto bett beye beyi beyt bibb bibe bibi bibo bieb bier biet bio- bioi biot birb bire biri biro birr birt biry bite bito bitt bobb bobe bobi bobo boby boee boeo boer boet boey boi- boie boii boit boob booe boor boot bor- bore bori boro borr bort bory botb bote boti boto bott boty boye boyi boyo breb bree brei breo brer bret brey brie brio brit brob broe broo bror brot brrr bry- brye bryo btie btob btor btrt btry bttb byer byit byob byoi byre byrt byte ebbo ebbr ebby eber ebit eboe eboo ebor eboy ebro eeby eeee eero eery eete eiei eier eire eiry eitb eiti eito eitr eoir eore eori eoto erbb erbe ereb erei erer eret erie erio erit erob eroe eroi eroo erre erro erye etbr etee eter etio etoe etoy etre etro ette etti etto etty eyeb eyer eyet eyey eyio eyir eyot eyre eyry eyte eyyr i-be i-by ibet ibie ibot ibri ibro ibtb ibyi ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt iobi ioby ioee ioii ioio ioit iooi iooo iore iori iote ioto irbe irby iree irer iri- irie irio iriy irob irre irri irte irti itbe itby iter itet itie itoi itoo itor itri itry itto itty iyer iyet iyre o-eo obbo obby ober obet obey obie obit oboe oboi obor obot oboy obre obri obro oere oeti oeye oeyo oier oiii oire oirt oiry oiti oobe oobi ooby ooer oooo oore oort oory ootb ooty orbb orbe orbi orbo orby ore- oreb oreo orer orey ori- orie orio orit oro- oroe oror orot oroy orri orro orry orte orto otee oter otit oto- otoe otoo otor otoy otre otro otry otte otti otto otyr oyee oyer oyre oyri rbbb rbbr rebb rebe rebo reeb reet reii reir reit reot rere reri rero rert rery rete reti reto retr rett rety reye rib- ribe ribo riby rier riet riot rire riri rite riti rito ritt riyo rob- robb robe robi robo robt roby roer roet roey roio roir roit roob rooi roor root rore rori roro rort rory rote roti roto rotr rott roty roye royt rrrr rtee rtei rybe ryeb ryet ryob ryot rytt ryyt tbit tbrb tebo teer teet teie teir teor ter- tere teri tero terr tery tete teti teto tetr tett teye teyr tibi tie- tiee tiei tieo tier tiet tiit tirb tire tiri tiro tirr tiry tite titi tito titt tiye tiyi tiyo to-y tobe tobi tobo tobt toby toee toei toer toet toey toie toit toor toot tore tori toro torr tort tory tote toti toto totr tott toty toyb toyo toyt tre- tree trei treo tret trey tri- trib trie trio trit troe troi troo trot troy trte trtr try- tryb trye tryo ttbb tteo tter ttoe ttoy tttt tybi tybo tyee tyer tyet tyir tyr- tyre tyro tyrr tyte tyti tyto tytt tyty yber ybet ybor ybry yeer yeet yeie yeii yeir yeit yeot yerb yere yeri yero yerr yert yery yete yeti yeto yett yeye yeyi yeyo yeyr yiet yirb yire yirr yite yiti yobi yobo yoit yoot yore yori yoro yort yory yote yott yoye yoyo ytre yyyy

-tree b-boy bbbee be-er be-ro beber bebot bebti beebe beeby beeri beery beete beety beibi beier beire beite beoir beory beote berbe berei beret berey berie berio berit berob beroe beror berre berri berry berte berti berto berty betee beter betie betio betoo betor betre bett- bette betti betto betty betyb beyer beyre beyte beyti bibbe bibbo bibby biber bibey bibie bibio bibri biebe bieby biere bieri biert biery bieti biore birie biter bitey bitit bitry bitte bitti bitto bitty bo-bo bobbi bobby bobet bobr bobre bobri bobry boero boibe boier boire boiro boite boito booby booer booit boore boort booty booyo borbo boree borer boret borey borio boro- boroo borot borre borro botet botie botro botte botti botty botye boyer boyet boyey