iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt ioii ioio ioit iooi iooo ioos iori iors ioso ioto iri- irio iris iriy irri irrs irti irts isis isit iso- isor isos isri issi isso issr isss issy isti isto istr ists isty isys itis itoi itoo itor itos itri itrs itry itsi itso itsy itto itty iyos oiii oios oirt oiry oist oiti oooo ooos oort oory oosi oost oots ooty ori- orio oris orit oro- oror oros orot oroy orri orro orrs orry orsi orso orsy orto orts orys osii osis osoi osoo osor osos osro ossi osso ossy osti ostr osts osyt otis otit oto- otoo otor otos otoy otro otrs otry otso otti otto otts otyr oyri oyss oyst riis rios riot riri rirs risi riso riss rist riti rito rits ritt riyo roio roir rois roit rooi roor roos root rori roro rort rory rosi roso ross rost rosy roti roto rotr rots rott roty roys royt rrrr rsis rsos rsts rtss rtts ryis ryot rysy rytt ryyt s-ii s-os siit sior sios siot siri siro sirr sirs sirt sisi siss sist sisy sit- siti sito sits sitt sity siyi soir sois soit soor soos soot sooy sori soro sorr sors sort sory sosi soso soss sost soto sots soyo soys soyt sris sros srtr ssis ssit ssot ssri ssrs sssi ssss ssts stio stir stis stit stoo stor stos stot stoy stri stro strs stry stsi stss sttr styr stys syis syro syrs syrt syry syso syss syst sytt tiit tios tiri tiro tirr tirs tiry tisi tiso tiss tist titi tito tits titt tiyi tiyo to-y tois toit toor toos toot tori toro torr tors tort tory tosi toso toss tost tosy toti toto totr tots tott toty toyo toys toyt tri- trio tris trit troi troo tros trot troy trsi trst trtr try- tryo trys tsis tsoi tsos tsoy tssi tssr tsst tsts tsys ttoy ttss tttt ttys tyir tyr- tyro tyrr tyss tyst tyti tyto tytt tyty yirr yiss yist yiti yoit yoot yori yoro yort yory yosi yoso yost yott yoyo ysii yyyy