bbbb bbeb bbet bbox bebb bebe bebo beeb beer beet behr beo- beor beot bere bero berr bert bete beth beto bett bher bhet bhor bhot bhrt bobb bobe bobo boee boeo boer boet boho bohr boht boob booe booh boor boot boox bor- bore borh boro borr bort botb bote both boto bott breb bree breo brer bret brex brob broe broh broo bror brot brox brrr btex btob btor btrt bttb ebbo ebbr eber eboe eboo ebor ebox ebro eeee eero eete eeth eext eheh eher ehre ehte eore eoto er-x erbb erbe ereb erer eret erob eroe eroo erre erro erth etbr etee eter eth- ethe etho etoe etoh etox etre etro ette etto exer exh- exo- exor exrx exte extr hbox hebb hebe hebo hebr heeb heer heet hehe heho heor herb here hero herr hert hete heth heto hett hex- hexb hexe hext hhex hhhh hobe hobo hoer hohe hoho hooe hoor hoot hoox hore horo horr hort hotb hote hoth hoto hotr hott hree hrob hrtb hrte htet htoh httr o-eo obbo ober obet obex oboe obor obot obox obre obrh obro oere ohbe ohee oher ohho ohob ohoh ohre ohte ohto oobe ooer ooho oooh oooo oore oort ootb orbb orbe orbo ore- oreb oreh oreo orer orex orhe oro- oroe oror orot orro orte orth orto otee oter othe otho othr oto- otoe otoh otoo otor otre otro otte otto oxer oxo- oxox oxxo rbbb rbbr rboh rebb rebe rebo reeb reet rehb rehe reht reot rere rero rert rete reth reto retr rett rexx rheb rhee rheo rhet rhex rhob rhoh rob- robb robe robo robt roer roet rohe rohr roob roor root roox rore roro rort rote roth roto rotr rott roxo rrrr rtee rtex tbox tbrb tebo teer teet teho tehr teoh teor ter- tere tero terr tete teth teto tetr tett tetx text the- theb thee theo ther thet thex thoe thoo thor thot thre thro thtb thtr tobe tobo tobt toee toeh toer toet toho tooh toor toot tore toro torr tort torx tote toth toto totr tott tox- toxo toxt tre- tree treo tret trex troe troo trot trox trte trtr ttbb tteo tter ttoe tttt txtr xbee xbox xeer xer- xero xert xexe xoro xote xoth xoxo xtro xxxo xxxx