prot prpd prrd prri prti prtp prtr ptak ptop ptpd ptrd pttk raad raak raat rada radd rado radr radt raia raid raii raik raip rair rait raka raki rakk rakt raok raop rapa rapd rapi rapp rapt rara rari rark raro rata rati ratk rato ratp ratt rdap rdio riaa riad riai riak riat rida ridd ridi rido riia rika riki rikk riot ripa ripd ripi ripp ripr ript riri rita riti rito ritt road roak roap roar roat roda rodd rodi rodo roia roid roik roio roir roit roka roki rokk roko rokr rood rooi rook roop roor root ropa ropo rora rori rork roro rort rota roti rotk roto rotr rott rpdp rpii rpta rptd rrad rrat rrrr rtai rtdt rtpa rttp taa- taar taat tada tado taia taik taio taip tair tait taka taki takk tako takt taoa taor tapa tapi tapo tapp tapr tapt tara tard tari tark taro tarp tarr tart tata tati tato tatr tatt tdap tdkp tdkr tdor tdra tdri tiaa tiao tiar tidd tiit tika tiki tiko tiop tip- tipa tipi tipo tipp tipt tira tird tiri tiro tirr tita titi tito titp titt tkip tkod toad toat toda todd todi todo todt toid toit toka toki toko tooa tood took toor toot top- topa topd topi topo topp topt tora tord tori tork toro torp torr tort tota totd toti toto totr tott tpap tpia tpir tppa tppd tppp tppr tptp tptr traa trad trai trak trao trap trat tri- tria trik trio trip trit troa trod troi troo trop trot trpa trpp trra trtr ttop tttt