-ene -one eeee eefe eefn eeng ef-g efen efeo efgp efon egee egfp egge eggo eggp egne ego- egon egpe egpn egpo enee eneg eneo enfp enge engg engo enne eno- enoe enon enp- eone epee epen epon eppo eppp feen fefe feff fefo fege fegg fene feng fenn feof feon ffee ffff fofo foge fogg fogn fogo fone fong fono foof foon fopp geen geep gefe gege gegg gego gen- gene genf geng genn geno geo- geof geog geon gepe ggfg gggg ggpo gnof gnoo goef goen gofe goff gogo gon- gone gong gonn gono goof goog goon goop gope gopo gpgp neef neen neep nefe neff nege nego negp nene neng neno neo- neon neoo nepe nfff nfon ngef ngen ngon nngn nnnn nogg nogo non- none nong nonn nono noo- noon nooo noop nope o-eo oen- oeno ofen off- offe offo ofgo ofno ogee ogen ogge ogog ogon one- onee oneg oneo onep onge ongo onne onno onon onpg ooff oone oooo open opep opng opo- opon oppo peen peep peff pegg pego pen- pene peng penn peno peon pepe pepo pfff pnon pnpo pnpp poff poge pogg pogo pone pong pono ponp poof poon poop pop- pope popo popp ppen pppn pppo pppp