iiii iiis iiit iirs iisi iisr iist iisu iitr iitt ilir ilis ilit ill- illi ills illt ilts ilus ilut iri- iril iris irri irrs irti irts irul irus isil isis isit isls isri issi issr isss issu isti istr ists isus itil itis itll itri itrs itsi itsu itur iuiu iuss iust liii liir liis lili lill lils lilt lilu liri lirl lirr lirs lirt liru lisi liss list lisu liti litl litr lits litt litu lius liut llll lrrr lrst lrts ls-r lssr lsts ltrs ltsi ltsr lttr luis luit luli lull lulu luri lurs lurt lusi luss lust luti luts riis rill rilu riri rirs risi riss rist risu riti ritl rits ritt ritu rius rlls rrrr rsis rssl rsts rstu rtls rtlt rtss rtts ruis ruit rull ruri rurs ruru rusi russ rust rusu ruti rutl ruts rutt rutu s-ii siit sil- sili sill sils silt silu siri sirr sirs sirt siru sisi siss sist sisu sit- siti sits sitt situ siui sius siut sl-i slir slit slrs slst slsu slts slur slut sris srtr ssis ssit sslt ssri ssrl ssrs sssi ssss sstl ssts stil stir stis stit stlt stri strs stru stsi stss sttr stul stur stus stut suir suis suit sul- suli sull sult sulu sur- suri surr surs surt suru sus- susi suss sust susu suti sutu suus tiit tiiu till tilr tils tilt tiri tirl tirr tirs tiru tisi tiss tist titi tits titt titu tlli tlrs tri- tril tris trit trsi trst trtr trus trut truu tsis tssi tssr tsst tsts tsui ttss tttt ttul tuil tuis tuit tuiu tuli tull tulu turi turr turs turt turu tusi tuss tust tuti tutl tuts tutt tutu uirr uist uits ulli ullr ulti ults ultt ulul ulus uris uriu urls urri ursi urss ursu urts urur urus urut usis uslu ussr usss usst ussu usti usts usui usul usus util utis utri utsl utti uttu uulu uuri uusi uuuu