ffff ffii ffrr fftf ffun fiff fifi fift fiii fini finn fint firn fiti fitt fnuf frin frit frun ftii fuff fufu fuir fuit funf funt fur- furi furn furr furt futi futu ifit ifni ifnr ifrf ifri iftn iiii iiit iitr iitt infi init inni innr innu inri inti intn intr intu inui inun irfu iri- irin irri irtf irti irun itif itin itrf itri ittf itur iuiu n-ii nfff niff nift niir niit niiu nini nirt niru nitf niti nitr niur nnit nnnn nntn ntnu ntru nttr ntui nuff nuin nuit nunn nunt nuri nurn nurr nurt nuru nutt nutu riff rift rifu riif riin rinf rinn riri riti ritt ritu rnin rnnt rnut rrif rrrr rrun ruff ruft ruif ruin ruit runf runi runn runt ruri ruru ruti rutt rutu ruun tfin tiff tift tiit tiiu tini tinn tint tinu tiri tirr tiru titi titt titu tnut trfr tri- trif trin trit trtr trun trut truu ttff ttfn tttt tuff tufi tuft tufu tuin tuit tuiu tuni tunn tunu turf turi turn turr turt turu tuti tutt tutu uint uirr uni- unif unii unin unir unit unni unrf unut urff urfi urft urif urin uriu urni urri urun urur urut utin utri utti uttu uuni uuri uutf uuuu