-ene -ine eeee eefe eefn efen effi eiei eien eine eini enee enfp enif enin enne enni enp- enpi epee epen epi- epie epin epip eppp feen fefe feff fefi feie fein fene feni fenn ffee ffff ffii fief fien fife fiff fifi fiii fine fini finn finp fipp fpin ieie ifen ifni iiie iiii iipf inee infi infp inne inni inp- inpe inpi inpp ipen ipie ipin ippf n-ii neef neei neen neep nefe neff nefi neif nein neip nene neni nepe nepi nfff nfip nief nien nife niff niip nine nini nipe nnnn nnpi npif npin peen peep peff pein peip pen- pene peni penn pepe pepi pfff pien piep piff piip pine pini pinn pinp pipe pipi pipp pnin pnpp ppen ppie ppif pppn pppp