bbbb bbdd bbdo bbeb bbet bd-r bebb bebe bebo bede bedo beeb beed beer beet beo- beod beor beot berd bere bero berr bert bete beto bett bobb bobe bobo bodb bode bodo boee boeo boer boet boob bood booe boor boot bor- bord bore boro borr bort botb botd bote boto bott brdo brdt breb bred bree breo brer bret brob brod broe broo bror brot brrr btdt btob btor btrt bttb d-bo dbtt dddd ddot ddre debe debt dedd dede dedo deeb deed deer deet deor der- derb dere dero derr dete deto detr dobb dobe dod- dodd dode dodo doer doob dood door doot dord dore doro dorr dort dotd dote doto dott dred dree dret drob drod drot dted dtor dtot ebbo ebbr ebed eber eboe eboo ebor ebro edde eddo ede- eder edod eede eeee eero eete eode eore eotd eoto erbb erbe erde ereb ered erer eret erob erod eroe eroo erre erro etbr etee eter etoe etre etro ette etto o-eo obbo obdt obed ober obet oboe obor obot obre obro obtd odbo oddd oded odeo oder odet odoo odor odot oedo oere oobe ooer oooo oord oore oort ootb orbb orbe orbo orde ordo ore- oreb ored oreo orer oro- oroe oror orot orro orte orto otbd oted otee oter oto- otoe otoo otor otre otro otte otto rbbb rbbr rder rebb rebe rebo redd rede redo redr reeb reed reet reod reot rerd rere rero rert retd rete reto retr rett rob- robb robe robo robt rodd rode rodo roed roer roet roob rood roor root rore roro rort rote roto rotr rott rred rrrr rtdt rtee tbrb tddb tdor tebo tedd tede teed teer teet teor ter- tere tero terr tete teto tetr tett tobe tobo tobt todd tode todo todt toed toee toer toet tood toor toot tord tore toro torr tort totd tote toto totr tott tre- tred tree treo tret trod troe troo trot trte trtr ttbb tteo tter ttoe tttt