ffff ffii ffrr fiff fifi fifo fiii fiil fili fill filn filo fini finn fino finp fion fior fipp firn flii flin flip flon floo flop flor fofo foil foin foli foll folo folr fono foof fool foon fopp for- fori forl forn foro forr fpin fprf fril frin frio frip frol fron frop i-no ifil ifni ifno ifnr ifor ifpo ifrf ifri iiii iiio iino iioi iioo iiop iipf ilin ilio ilir ill- illi illo illp ilni ilno iloo ilpr infi infl info infp inni inno innr ino- inoi inol inon inor inp- inpi inpp inri inro ioii ioio iolo ioni ionn iono ioof iooi iooo iopl iori ipil ipin iplo ipop ippf ippo ippr ipri iri- iril irin irio irip iron irop irri liff lifl lifo liii liin liir lili lill lilo linn lino lio- lion lior lip- lipi lipl lipo lipp liri lirl lirn liro lirp lirr llll lloo loff lofi lofn loif loin loir loli loll lolo loni lono lonr loof lool loon loop loor lopi lopp lori lorn loro lpfp lppl lprp lrif lroi lron lrrr n-ii nfff nfip nfon niff niip niir nili nill nilo nilp nini ninl nino nion nioo nipr niro nlrp nnnn nnpi nnpr nofi noif noil noin noio noir nolf noli noll nolo nolp non- noni nonn nono noo- nool noon nooo noop noor nor- norf nori norn noro norr npif npin nppl npri nron nrpn nrrl off- offo offr ofno ofor oiii oion olin olio olli ollo olof olon olor onil onir onlf onni onno onon onor ooff oolo oooo opii opin opio opo- opon opor oppi oppo orff orfi ori- orif oril orin orio orlo orni orno oro- orof oron oror orpi orri orro pfff pffr pfli piff piip pil- pili pill pilo pini pinn pino pinp pion pipi pipo pipp piri pirl pirn piro pirr plff plif plin plio plip plon ploo plop plpp plri pnin pnln pnnl pnon pnpo pnpp pnro poff pofi poil poin poio poli poll polo poni pono ponp poof pool poon poop poor pop- popi popo popp pori porn poro porr ppif ppli pplo pppn pppo pppp pprf pri- prif prii prin prlr prnp pro- prof prol pron proo prop prri rffl riff riif riin rill rilo rilp rinf rinn rino riol rion ripi ripl ripp ripr riri rlif rlin rnin rnli roff rofl rofo roif roil roin roio roir rolf roll rolo rolp roni rono roof rooi rool roon roop roor ropo rori roro rpii rpof rpon rppn rrif rrrr