nnnn nnos nnot nnss nntn non- nonn nono nons nont noo- noon nooo noop noos noot nops nos- noss nost not- noto nots nott npss nptn nsos nsps nsso nssp nsss nstp nsts ntop ntss ntto onno onon onos onpt onso onst ont- onto oons oont oooo ooos oops oost ootp oots opo- opon opos oppo opps optn opto opts osno osoo osos osso osts oto- oton otoo otos otpp otso otto otts pnon pnot pnpo pnpp pono ponp pons pont poon poop poos poot pop- popo popp pops popt posn poso poss post poto pots pott ppos pppn pppo pppp ppps ppss pptn ppts pptt pson psos pspp psps psso psst psts ptop s-os snns snoo snop snos snot snpo snpp son- sono sons sont soon soop soos soot sopo sopp sops soso soss sost sotn soto sotp sots spns spon spoo spop spos spot spps spso spsp spss spst spto spts ssns ssop ssot sspo ssps sspt ssss sstp ssts stnn stns ston stoo stop stos stot stpp stps stss tnsp tnts tonn tono tons toon toos toot top- topo topp tops topt toso toss tost toto tots tott tpon tppp tptp tsop tsos tspn tspo tsps tspt tsst tsts tton ttop ttss tttt