-ene -ine eeee eiei eien eier eine eini eipr eire eirn enee ener enin enne enni enp- enpi enri epee epen eper epi- epie epin epip eppp eprp erei eren erer erie erin erne erni erpe erre ieie iere ieri iiie iiii inee inne inni innr inp- inpe inpi inpp inre inri ipen iper ipie ipin ippr ipri iree iren irer iri- irie irin irip irne irpe irre irri n-ii neei neen neep neer nein neip neir nene neni nepe nepi nepr nere neri nerr nien nier niip niir nine nini nipe nipr nire nnnn nnpi nnpr npin npri nren nrpn peen peep peer pein peip peir pen- pene peni penn pepe pepi per- pere peri pern perp perr pien piep pier piip pine pini pinn pinp pipe pipi pipp pire piri pirn pirr pnin pnpp ppen pper ppie pppn pppp pre- pree pren prep pri- prie prii prin prnp prri reen reep reii rein reir rene reni renn repe repi repp repr rere reri rien riep rier riin rine rinn ripe ripi ripp ripr rire riri rnie rnin rpii rppn rrrr