nnnn nrab nren nrna nrrd raab raad raaf raan raba rabb rabe rabi rada radd rade radr raed raef raen raer rafa rafe raff rafi raia raid raie raif raii rain rair rana rand rane rani rann rara rarb rare rarf rari rbaf rbbb rbbr rder rdfa rdna rea- read reae reaf rean rear reba rebb rebe reda redd rede redi redr reeb reed reef reen refd refe reff refi refn refr reia reid reif reii rein reir rena rend rene reni renn rera rerd rere reri rfae rfdi rfef rfid riaa riab riad riai rian rib- riba ribe rida ridd ride ridi ried rief rien rier rifa rife riff riia riif riin rina rind rine rinf rinn rire riri rnaf rnai rnbr rndf rnie rnin rrad rred rrif rrna rrrr