oooo oora oore oort ootb orab orae orai oran orao orar orat orba orbb orbe orbi orbo ore- orea oreb oren oreo orer ori- oria orie orin orio orit orna orne orni orno oro- oroe oron oror orot orra orri orro orta orte orto otan otar otea otee oten oter otin otit oto- otoe oton otoo otor otra otre otro otta otte otti otto raab raan raat raba rabb rabe rabi rabo raen raer raia raie raii rain rair rait rana rane rani rann rano rant raob rara rarb rare rari raro rata rate rati rato ratt rbbb rbbr rea- reae rean reao rear reat reba rebb rebe rebo reeb reen reet reia reii rein reir reit rena rene reni renn reno rent reot rera rere reri rero rert reta rete reti reto retr rett riaa riab riai rian riat rib- riba ribe ribo rien rier riet riia riin rina rine rinn rino rion riot rire riri rita rite riti rito ritt rnai rnbr rnie rnin rnnt rnot roab roan roar roat rob- roba robb robe robi robo robt roea roen roer roet roia roin roio roir roit rona rone roni rono ront roob rooi roon roor root rora rore rori roro rort rota rote roti rotn roto rotr rott rrat rrna rrrr rtai rtan rtee rtei taa- taan taar taat taba tabb tabe tabi tabo taen taer taia tain taio tair tait tana tane tani tann tano tant taoa taor tara tarb tare tari tarn taro tarr tart tata tatb tate tati tato tatr tatt tbar tbit tbrb tbta tean tear teat teba tebo teen teer teet teia teie tein teir tena tenb tene teni tenn teno tent teon teor ter- tera tere teri tern tero terr teta tete teti teto tetr tett tiaa tiab tian tiao tiar tiba tibi tie- tiea tiee tiei tien tieo tier tiet tiit tina tine tini tinn tino tint tion tira tirb tire tiri tiro tirr tita tite titi tito titt tneb toab toan toat toba tobe tobi tobo tobt toea toee toei toen toer toet toie toit tona tonb tone toni tonn tono tooa toon toor toot tora tore tori torn toro torr tort tota tote toti toto totr tott traa trab trae trai tran trao trat tre- trea tree trei tren treo tret tri- tria trib trie trin trio trit trna trno troa troe troi tron troo trot trra trte trtr ttab ttbb tten tteo tter ttoe tton tttt