nnnn nnos nnot nnpr nnss nntn non- nonn nono nons nont noo- noon nooo noop noor noos noot nops nor- norn noro norr nors nort nos- noss nost not- noto nots nott nprt npss nptn nron nrpn nrps nrsp nrts nsnr nsos nsps nsso nssp nssr nsss nstp nsts ntop ntss ntto nttr onno onon onor onos onpt onso onst ont- onto oons oont oooo ooos oops oort oost ootp oots opo- opon opor opos oppo opps optn opto opts orno orns oro- oron oror oros orot orps orro orrs orso orto orts osno osnr osoo osor osos osro osso ostr osts oto- oton otoo otor otos otpp otro otrs otso otto otts pnon pnot pnpo pnpp pnro pntr pono ponp pons pont poon poop poor poos poot pop- popo popp pops popt porn poro porr pors port posn poso poss post poto pots pott ppos pppn pppo pppp ppps ppss pptn ppts pptt prnp pro- pron proo prop pros prot prps prrs prso prss prtp prtr psnr pson psos pspp pspr psps psrp psso psst psts ptop rnnt rnot rnsp rntp rono rons ront roon roop roor roos root ropo rops roro rort roso rosp ross rost rotn roto rotr rots rott rpon rpos rppn rpps rptn rpts rrrr rrsp rsnn rsno rsnr rsos rspo rsps rstp rsts rtns rtps rtss rttp rtts s-os snns snoo snop snor snos snot snpo snpp snrs sntr son- sono sons sont soon soop soor soos soot sopo sopp sops sorn soro sorr sors sort soso soss sost sotn soto sotp sots spns spon spoo spop spor spos spot spps spro sprs spso spsp spss spst spto sptr spts srnn srno sros srps srpt srsp srtp srtr ssns ssop ssot sspo ssps sspt ssrs ssss sstp ssts stnn stnr stns ston stoo stop stor stos stot stpp stps strn stro strs stss sttr tnsp tnts tonn tono tons toon toor toos toot top- topo topp tops topt torn toro torp torr tors tort toso toss tost toto totr tots tott tpon tppp tppr tprs tptp tptr trno tron troo trop tros trot trpn trpp trps trst trtr tsop tsos tspn tspo tsps tspt tssr tsst tsts tton ttop ttss tttt