ssis ssns ssrg ssri ssrm ssrs sssb sssi sssm ssss sybo syen syer syes sygn syis sym- syme symi syms syn- syne syng syns syny syon syre syro syrs syry syse syso syss ybbs yben yber ybor ybry yeen yeer yees yegg yegi yego yeie yeii yeir yeme yemm yemn yene yeng yeni yens yeom yeon yeos yerb yere yeri yerm yern yero yerr yers yery yesi yesm yeso yess yeye yeyi yeyo yeyr ygoe ygon ygor yien ying yins yirb yire yirm yirn yirr yise yiss ymen ymer ymir ymne ymns ynes ynge ynne ynon yobi yobo yobs yoen yogi yogo yomi yomo yone yong yoni yono yons yoon yore yori yorn yoro yory yosi yoso yoye yoyn yoyo yren yrin yrne yron yryn ysby ysee ysen yser yses ysii yson ysse ysyb yyyy