nnnn nnos nnpr nnss non- nonn nono nons noo- noon nooo noop noor noos nops nor- norn noro norr nors nos- noss npss nron nrpn nrps nrsp nsnr nsos nsps nsso nssp nssr nsss onno onon onor onos onso oons oooo ooos oops opo- opon opor opos oppo opps orno orns oro- oron oror oros orps orro orrs orso osno osnr osoo osor osos osro osso pnon pnpo pnpp pnro pono ponp pons poon poop poor poos pop- popo popp pops porn poro porr pors posn poso poss ppos pppn pppo pppp ppps ppss prnp pro- pron proo prop pros prps prrs prso prss psnr pson psos pspp pspr psps psrp psso rnsp rono rons roon roop roor roos ropo rops roro roso rosp ross rpon rpos rppn rpps rrrr rrsp rsnn rsno rsnr rsos rspo rsps s-os snns snoo snop snor snos snpo snpp snrs son- sono sons soon soop soor soos sopo sopp sops sorn soro sorr sors soso soss spns spon spoo spop spor spos spps spro sprs spso spsp spss srnn srno sros srps srsp ssns ssop sspo ssps ssrs ssss