-ana aaaa aaaf aaan aaap aafa aaff aana aanp aaon aaoo aapa aapo afaa afan afao afap affa affo afoa afoo afpa ana- anaa anan anao anap anfa anfo anna anno ano- anoa anon anp- anpa anpp aono aopo apan apao apap apfa apfo apna apno apo- apof apon apoo apop appa faaa faan faap fafa faff fafo fana fano faon fapa fapp ffff foaf foan fofo fono foof foon fopp fpaa naaa naan nafa naff nafo nan- nana nann nano nanp napa napf napo napp nfaa nfff nfon nfpa nnnn noaa noap non- nona nonn nono noo- noon nooo noop npap nppa oafo ofan off- offa offo ofna ofno onan onna onno onon ooaa ooff oona oooo opan opap opo- opon oppa oppo paan paap pafa paff pan- pana pann pano paon papa papp pfaa pfff pnon pnpo pnpp poan poff pona pono ponp poof poon poop pop- popa popo popp ppan ppap ppfa ppoa pppa pppn pppo pppp