i-no iiii iiio iiis iino iioi iioo iiop iios iirs iisi iisp iisr inis inni inno innr inns ino- inoi inon inor inos inp- inpi inpp inri inro inrs inso insp inss ioii ioio ioni ionn iono ions iooi iooo ioos iops iori iors ioso ipin ipop ipos ippo ippr ipri ipsi ipso ipsp ipss iri- irin irio irip iris iron irop irps irri irrs irsp isin isis isno iso- ison isop isor isos ispr isps isri isrp issi isso issp issr isss n-ii niip niir nini nino nins nion nioo nios nipr nips niro nirs nisi niso nisp niss nnnn nnos nnpi nnpr nnss noin noio noir nois non- noni nonn nono nons noo- noon nooo noop noor noos nops nor- nori norn noro norr nors nos- noss npin npri npss nron nrpn nrps nrsp nsin nsis nsnr nsos nspi nsps nsso nssp nssr nsss oiii oins oion oios onir onis onni onno onon onor onos onso oons oooo ooos oops oosi opii opin opio opis opo- opon opor opos oppi oppo opps opsi ori- orin orio oris orni orno orns oro- oron oror oros orpi orps orri orro orrs orsi orso osii osin osip osis osno osnr osoi osoo osor osos osro ossi osso piip pini pinn pino pinp pins pion pipi pipo pipp pips piri pirn piro pirr pirs pisi piso piss pnin pnon pnpo pnpp pnro poin poio pois poni pono ponp pons poon poop poor poos pop- popi popo popp pops pori porn poro porr pors posi posn poso poss ppos pppn pppo pppp ppps ppss pri- prii prin pris prnp pro- pron proo prop pros prps prri prrs prsi prso prss psip psis psni psnr psoi pson psos pspi pspp pspr psps psrp psso riin riis rinn rino rion rios ripi ripp ripr rips riri rirs risi riso risp riss rnin rnsp roin roio roir rois roni rono rons rooi roon roop roor roos ropo rops rori roro rosi roso rosp ross rpii rpon rpos rppn rpps rrrr rrsp rsis rsnn rsno rsnr rsos rspo rsps s-ii s-os sini sinn sino sinp sins sion siop sior sios sipi sipo sipp sips siri siro sirp sirr sirs sisi siss snip snir snns snoo snop snor snos snpo snpp snrs soin soir sois son- soni sono sons soon soop soor soos sopi sopo sopp sops sori sorn soro sorr sors sosi soso soss spin spio spip spir spis spns spon spoo spop spor spos spps spri spro sprs spso spsp spss sris srni srnn srno sros srps srsp ssin ssis ssns ssop sspo ssps ssri ssrs sssi ssss