n-p-n nsnps nstnt nu-nu nunns nunun nupur nursu nurun nurus nusus p-n-p pnsup pnuts pptnt prntr prun- prunt pruss pssst pssts ptprn ptprr ptprs ptprt ptpru punss punts purrs purus putt- putts puttu putun putup puurs rnsts rrsps rsust rttns runst runts runup rusts rustu ruutu snrnp snurp snurt snuss sprtn sprun sprut spurn spurr spurs spurt sputs sssss strrs strut sttns sttsn stuns stunt stupp stups sturt stuss sunpu suntu sunup supps supts supur suput surpu surtr surur surus susun susus suttu suuns t-nut tntnt tnuts tppts trups trupt truss trust truus tsuru tsuur ttttt turn- turnp turns turnt turnu turps turss turst tursu turtu turup turut tutun tutus tuuru unnun unnur unnut unput unrun unstr unsu unsun unurn upput uprun upsun ursus urutu ussun ustup ustur usurp usutu uttur uturn uturu uuuuu