pinn pinp pipe pipi pipp pirc pire piri pirn pirr pnec pnic pnin pnpp ppcc ppcd ppci ppen pper pphi ppic ppid ppie ppif ppih pppd pppn pppp pprc pprf prcc prcd prcf prcp pre- prec pred pree pref pren prep prfc pri- prid prie prif prii prin prnd prnp prpd prrd prri rccc rcdc rcde rcep rcfc rcic rcid rcnr rcpd rcpi rcrd rder rdpc recc recd rece rech reci recp recr redc redd rede redh redi redr reed reef reen reep refd refe reff refi refn refr rehe rehi rehn reid reif reii rein reir rend rene reni renn repe repi repp repr rerd rere reri rfdi rfef rffc rfic rfid rhce rhcp rhee rhen rhin ricc rice rich ridc ridd ride ridi ried rief rien riep rier rife riff riif riin rind rine rinf rinn ripd ripe ripi ripp ripr rire riri rncp rndc rndf rndp rnie rnin rpdp rpfc rpii rppn rred rrfc rrif rrrr