sign sigs sigy sine sing sini sinn sinp sins siny sipe sipi sipp sips sipy sire sirf siri sirp sirr sirs sise sisi siss sisy siyi snee sneg snep sner snes snie snig snip snir snns snpg snpp snrs snsy snye snys spee spef speg spen sper spes spey spfs spie spig spin spip spir spis spne spns sppf spps spri sprs spry spse spsp spss spy- spyr spys sres srfi sris srni srnn srps srsp ssee ssep sses ssfp ssgs ssin ssis ssns sspe sspf ssps ssrg ssri ssrs sssf sssi ssss syen syer syes syfe syff syfy sygn syis syn- syne syng syns syny sype syre syrs syry syse syss yeen yeep yeer yees yefe yeff yegg yegi yeie yeii yeir yene yeng yeni yens yepe yepp yeps yere yeri yern yerr yers yery yesi yess yeye yeyi yeyr yien yiff ying yins yipe yips yire yirn yirr yise yiss ynes ynge ynne ypir ypsi yren yrin yrne yryn ysee ysen yser yses ysii ysnp yspi ysse yyfe yyff yyyy