bbbb bbeb bbet bebb bebe bebi bebo beeb beej beer beet beij beir beit beo- beor beot bere beri bero berr bert bete beti beto bett bibb bibe bibi bibo bieb bier biet biji bio- bioi biot birb bire biri biro birr birt bite bito bitt bobb bobe bobi bobo boee boeo boer boet boi- boie boii boit boji bojo bojt boob booe boor boot bor- bore bori borj boro borr bort botb bote boti boto bott breb bree brei breo brer bret brie brio brit brje brob broe broo bror brot brrr btie btob btor btrt bttb ebbo ebbr eber ebit eboe eboo ebor ebro eeee eero eete eiei eier eiji eire eitb eiti eito eitr ejer ejit ejji ejob ejoo ejot eoir eore eori eoto erbb erbe ereb erei erer eret erie erio erit erob eroe eroi eroo erre erro etbr etee eter etio etoe etre etro ette etti etto i-be ibet ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt ijet ijji iobi ioee ioii ioio ioit iooi iooo iore iori iote ioto irbe iree irer iri- irie irio irje irob irre irri irte irti itbe iter itet itie itoi itoo itor itri itto j-ro jbob jebb jebe jeer jeet jeit jere jeri jero jert jetb jete jeti jett jibb jibe jibi jiet jije jiji jiri jiro jirt jiti jito jobe jobo joee joie joio joit joji jojo joor joot jore joro jort joto jott jrbr o-eo obbo ober obet obie obit oboe oboi obor obot obre obri obro oere oeti oier oiii oire oirt oiti oobe oobi ooer ooij ooji oooo oore oort ootb orbb orbe orbi orbo ore- oreb oreo orer ori- orie orio orit orji oro- oroe oror orot orri orro orte orto otee oter otit oto- otoe otoo otor otre otro otte otti otto rbbb rbbr rebb rebe rebo reeb reet reii reir reit reot rere reri rero rert rete reti reto retr rett rib- ribe ribo rier riet riji rijo riot rire riri rite riti rito ritt rob- robb robe robi robo robt roer roet roio roir roit roje roji rojo roob rooi roor root rore rori roro rort rote roti rotj roto rotr rott rrrr rtee rtei tbit tbrb tebo teej teer teet teie teir tejo teor ter- tere teri terj tero terr tete teti teto tetr tett tibi tie- tiee tiei tieo tier tiet tiit tiji tijo tirb tire tiri tiro tirr tite titi tito titt tobe tobi tobo tobt toee toei toer toet toie toit toji tojo toor toot tore tori toro torr tort tote toti toto totr tott tre- tree trei treo tret tri- trib trie trio trit troe troi troo trot trte trtr ttbb tteo tter ttoe tttt