hhhh hhhs hoho hoor hoos hoot horo horr hors hort hosh hoss host hoth hoto hotr hots hott hrhs hros hrso hshs hsts hths htoh httr ohho ohhs ohoh ohos ohso ohss ohto ooho oohs oooh oooo ooos oort oost oots orhs oro- oror oros orot orro orrs orso orth orto orts osho oshs osoo osor osos osro osso ostr osts otho othr oths oto- otoh otoo otor otos otro otrs otso otto otts rhhs rhoh rhos rohr rohs roor roos root roro rort rosh roso ross rost roth roto rotr rots rott rrhs rrrr rshs rsos rsts rths rtss rtts s-os shhh shhs shoo shor shos shot shrs shts sohh soho sohs soor soos soot sorh soro sorr sors sort sosh soso soss sost soth soto sots srhs sros srtr sshs ssot ssrs sssh ssss ssth ssts sths stoo stor stos stot stro strs stss sttr thoo thor thos thot thro thsr thss thtr thts toho tooh toor toos toot toro torr tors tort tosh toso toss tost toth toto totr tots tott trhs troo tros trot trst trtr tshs tsos tssr tsst tsts ttss tttt