ffff ffii ffrr fiff fifi fiii fiil fili fill fixx flii flix fluf flur flux fril fuff fufu fuil fuir fuli full fulu fur- furi furl furr fuxi fuxl ifil ifrf ifri iiii ilir ill- illi ilxx irfu iri- iril irix irri irul iuiu ixil ixlu ixxi liff lifl lifx liii liir lili lill lilu liri lirl lirr liru liuf lixi lixu llll lrif lrrr luff lufu luif luli lull lulu luri luxi lxii lxxi lxxx rffl riff rifu riif rill rilu riri rlif rrif rrrr ruff ruif rull ruri ruru uirr ulli ullr ulul urff urfi urif uriu urix urri urur uulu uuri uuuu uxul x-fi xiii xil- xili xill xixi xlii xlix xuri xuxu xxii xxix xxxi xxxx