f--k ffff ffii ffrr ffss fiff fifi fiii fiil fiki fili filk fill fils firk firs fisi fisk fiss fisu fiuk flii flik flis fluf flur flus frik fril fris fsfi fssf fuff fufu fuil fuir fukk fuku fuli fulk full fuls fulu fur- furi furl furr furs fusi fusk fuss fusu ifil ifis ifrf ifri iiii iiis iirs iisi iisr iisu ikki ikri iksu ilir ilis ilki ilks ilku ill- illi ills ilus irfu iri- iril iris irki irks irri irrs irsf irul irus isil isis iskf isku isls isri issf issi issr isss issu isus iuiu iuss kfff kffk kfil kfir kfis kflf kfli kfll kfls kfri kfrr kfrs kfru kfsi kfsk kfsr kful kiff kifl kifr kifs kifu kiii kiik kiis kiiu kikf kiki kikk kikr kiku kili kilk kill kilr kirf kiri kirk kirr kirs kiru kisf kisi kisk kisl kisr kiss kisu kiul kiur kiuu kkfi kkfr kkfs kkik kkkk kklf kkli kkll kkls kkrf kkrk kkrl kkrr kkrs kksf kksi kksr kkss kksu kkus kkuu klff klfi klif klik klil klir klis kliu klkk klkl klkr klks kllk klls klrf klrk klrr klrs klru klsf klsi klsr klsu kluf kluk klur kluu krff krfs krik kril kris krki krkk krkr krks krku krlf krrf krri krrk krrl krrr krrs krsf krsk krsl krsr krss krsu kruf krui kruk krul krur ksfi ksfr ksif ksii ksik ksil ksir ksis kskf kskk kskr ksks ksku ksli kslk ksll kslr kslu ksrf ksrr ksrs kssi kssl kssr ksss kssu ksui ksuu kuff kufi kufr kuik kuil kuki kukk kukl kuks kuku kulf kuli kull kulu kuri kurk kurl kurr kurs kuru kusf kusu kuuk kuul kuur kuuu liff lifl liii liir liis liku lili lill lils lilu liri lirk lirl lirr lirs liru lisi lisk liss lisu liuf lius lkfs lkrs llks llll lrif lrrr ls-r lssr luff lufu luif luik luis luki luli lull lulu luri lurk lurs lusi lusk luss luuk rffl riff rifs rifu riif riis riki rikk riku rill rilu riri rirs risi risk riss risu rius rkkf rkss rlif rlls rrif rrrr rsis rssl ruff ruif ruis ruki rukk ruku rulk rull ruri rurs ruru rusi rusk russ rusu s-ii sfls sfss sfsu siff sifl sifr sifu siik siki sikr siks siku sil- silf sili silk sill sils silu sirf siri sirk sirr sirs siru sisi sisk siss sisu siui sius skif skik skil skir skis skiu skss skui skul skur sl-i slik slir slrs slsu slur srfi sris ssfl ssis ssri ssrl ssrs sssf sssi ssss suf- suff sufi sufr sufs sufu suir suis suki suks suku sul- sulf suli sulk sull sulu sur- surf suri surr surs suru sus- susi susk suss susu suus ufuk uirr ukur ulik ulli ullr uluk ulul ulus urff urfi urif urik uris uriu urls urri ursi urss ursu uruk urur urus us-k usfi usfl usfs usif usis uslu ussf ussr usss ussu usui usul usus uulu uuri uusi uuuu