NOSOTROPHY

ho no oh on op or os oy sh so to yo

hon hop hos hot hoy hyp noh noo nor nos not nth oho ohs ono ons ooh oot ops opt ors ort pht poh poo pot pro pry pst rho rot shy son sop sot soy spy sty syn tho thy ton too top tor toy try yon

hons hoop hoot hops horn host hots hoys hypo hyps nosh nosy onos onto oohs oops oots opts orts phon phot pons pony pooh poon poor poos porn port posh post posy pots pros pyro rhos root ropy rosy roto rots ryot shoo shop shot snot soon soot soph sorn sort soth spot spry stop syph thro tons tony toon toph topo tops torn toro tors tory tosh toyo toys trop troy typo tyro