sorn soro sorr sors sory sose soso soss soye soyo soys srcc srec srem sreo sres srmc srnn srno sros sscc ssce sscs ssec ssee ssem sses ssmc ssns ssoc ssrc ssrm ssrs sssc sssm ssss syce syco sycr syen syer syes sym- syme syms syn- sync syne syns syny syon syre syro syrs syry syse syso syss yccc ycee yeen yeer yees yeme yemm yemn yenc yene yens yeom yeon yeos yere yerm yern yero yerr yers yery yesm yeso yess yeye yeyo yeyr ymen ymer ymne ymns ynce ynes ynne ynon yoen yomo yone yono yons yoon yore yorn yoro yory yoso yoye yoyn yoyo yren yrne yron yryn ysco ysee ysen yser yses yson ysse yyyy