ffff ffii ffrr fiff fifi fifo fiii fini finn fino finp fion fior fipp firn fofo foin fono foof foon fopp for- fori forn foro forr fpin fprf frin frio frip fron frop i-no ifni ifno ifnr ifor ifpo ifrf ifri iiii iiio iino iioi iioo iiop iipf infi info infp inni inno innr ino- inoi inon inor inp- inpi inpp inri inro ioii ioio ioni ionn iono ioof iooi iooo iori ipin ipop ippf ippo ippr ipri iri- irin irio irip iron irop irri n-ii nfff nfip nfon niff niip niir nini nino nion nioo nipr niro nnnn nnpi nnpr nofi noif noin noio noir non- noni nonn nono noo- noon nooo noop noor nor- norf nori norn noro norr npif npin npri nron nrpn off- offo offr ofno ofor oiii oion onir onni onno onon onor ooff oooo opii opin opio opo- opon opor oppi oppo orff orfi ori- orif orin orio orni orno oro- orof oron oror orpi orri orro pfff pffr piff piip pini pinn pino pinp pion pipi pipo pipp piri pirn piro pirr pnin pnon pnpo pnpp pnro poff pofi poin poio poni pono ponp poof poon poop poor pop- popi popo popp pori porn poro porr ppif pppn pppo pppp pprf pri- prif prii prin prnp pro- prof pron proo prop prri riff riif riin rinf rinn rino rion ripi ripp ripr riri rnin roff rofo roif roin roio roir roni rono roof rooi roon roop roor ropo rori roro rpii rpof rpon rppn rrif rrrr