h-ii hhhh hhhs hihi hiho hiht hiis hiit hiri hiro hirs hirt hish hiss hist hiti hito hits hitt hoho hoir hois hoit hoor hoos hoot hori horo horr hors hort hosh hoss host hoth hoti hoto hotr hots hott hrhs hrit hros hrso hshs hsts hths htoh httr ihis ihit ihss iiht iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt ioii ioio ioit iooi iooo ioos iori iors ioso ioto irhs iri- irio iris iroh irri irrs irti irts ishi ishr ishs isis isit iso- isor isos isri issh issi isso issr isss isth isti isto istr ists iths itis itoh itoi itoo itor itos itri itrs itsi itso itto ohhi ohho ohhs ohio ohis ohoh ohos ohso ohss ohto oiii oios oirt oist oiti ooho oohs oooh oooo ooos oort oosi oost oots orhs ori- orio oris orit oro- oror oros orot orri orro orrs orsi orso orth orto orts oshi osho oshs osii osis osoi osoo osor osos osro ossi osso osti ostr osts otho othr oths otis otit oto- otoh otoo otor otos otro otrs otso otti otto otts rhhs rhio rhoh rhos riho rihs riht riis rios riot riri rirs rish risi riso riss rist rith riti rito rits ritt rohr rohs roio roir rois roit rooi roor roos root rori roro rort rosh rosi roso ross rost roth roti roto rotr rots rott rrhs rrrr rshs rsis rsos rsts rths rtss rtts s-ii s-os shhh shhs shih shii shio shir shis shit shoo shor shos shot shri shrs shts sihi sihr sihs siht siit sior sios siot siri siro sirr sirs sirt sish sisi siss sist sit- sith siti sito sits sitt sohh soho sohs soir sois soit soor soos soot sorh sori soro sorr sors sort sosh sosi soso soss sost soth soto sots srhs sris sros srtr sshs ssis ssit ssot ssri ssrs sssh sssi ssss ssth ssts sths stih stio stir stis stit stoo stor stos stot stri stro strs stsi stss sttr thi- thio thir this thoo thor thos thot thri thro thsr thss thtr thts tiht tiit tios tiri tiro tirr tirs tish tisi tiso tiss tist tith titi tito tits titt tohi toho tois toit tooh toor toos toot tori toro torr tors tort tosh tosi toso toss tost toth toti toto totr tots tott trhs tri- trio tris trit troi troo tros trot trsi trst trtr tshi tshs tsis tsoi tsos tssi tssr tsst tsts ttss tttt