iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt ilio ilir ilis ilit ill- illi illo ills illt iloo ilos ilot ilts ioii ioio ioit iolo iooi iooo ioos iori iors ioso ioto iri- iril irio iris irri irrs irti irts isil isis isit isls iso- isol isor isos isri issi isso issr isss isti isto istr ists itil itis itll itoi itol itoo itor itos itri itrs itsi itso itto liii liir liis lili lill lilo lils lilt lio- lior lios liri lirl liro lirr lirs lirt lisi liso liss list liti litl lito litr lits litt llll lloo loir lois loit loli loll lolo lols lool loor loos loot lori loro lors losi loso loss lost loti lotl loto lotr lots lott lroi lrrr lrst lrts ls-r lsso lssr lsts ltrs ltsi ltsr lttr oiii oils oios oirt oist oiti olio olis olit olli ollo olor olos olot olsi olst oolo oooo ooos oort oosi oost oots ori- oril orio oris orit orlo oro- oror oros orot orri orro orrs orsi orso orto orts osii osis osli oslo osoi osoo osor osos osro ossi osso osti ostr osts otis otit oto- otoo otor otos otro otrs otso otti otto otts riis rill rilo riol rios riot riri rirs risi riso riss rist riti ritl rito rits ritt rlls roil roio roir rois roit roll rolo rolt rooi rool roor roos root rori roro rort rosi roso ross rost roti rotl roto rotr rots rott rrrr rsis rsos rssl rsts rtls rtlt rtss rtts s-ii s-os siit sil- sili sill silo sils silt siol sior sios siot siri siro sirr sirs sirt sisi siss sist sit- siti sito sits sitt sl-i slir slit sloo slos slot slrs slst slts soil soir sois soit soli soll solo solr sols solt sool soor soos soot sori soro sorr sors sort sosi soso soss sost sotl soto sots sris sros srtr ssis ssit sslt ssot ssri ssrl ssrs sssi ssss sstl ssts stil stio stir stis stit stlo stlt stol stoo stor stos stot stri stro strs stsi stss sttr tiit till tilo tilr tils tilt tios tiri tirl tiro tirr tirs tisi tiso tiss tist titi tito tits titt tlli tlos tlrs toil tois toit tol- toli toll tolo tolt tool toor toos toot tori toro torr tors tort tosi toso toss tost toti toto totr tots tott tri- tril trio tris trit troi troo tros trot trsi trst trtr tsis tsoi tsol tsos tssi tssr tsst tsts ttss tttt