iiii iiis iisi iisp inis inni inns inny inp- inpi inpp insp inss ipin ippy ipsi ipsp ipss isin isis isps ispy issi issp isss issy isys n-ii niip nini nins nips nisi nisp niss niyi nnnn nnpi nnss npin npss npsy nsin nsis nspi nsps nssp nsss nyny nyss piip pini pinn pinp pins piny pipi pipp pips pipy pisi piss pisy piys pnin pnpp pppn pppp ppps ppss psip psis psni pspi pspp psps psy- psys pyin pyn- pypy pyss s-ii sini sinn sinp sins siny sipi sipp sips sipy sisi siss sisy siyi snip snns snpp snsy snys spin spip spis spns spps spsp spss spy- spys ssin ssis ssns ssps sssi ssss syis syn- syns syny syss yins yips yiss ypsi ysii ysnp yspi yyyy