syam syco sydi syds syia syis sym- syma symi syms syn- sync synd syns syny syon syso syss yaan yaas yacc yaco yacy yada yado yads yaid yain yama yami yamm yamn yamo yams yana yani yann yano yans yaoi yasa yasi yasm yaso yass yaya yayo yays ycao yccc ydad ydan yday ydin ydna ydon yian yida yidi yids yima yina yins yiss ymad ymas ymca ymci ymns ymyd ynca ynoa ynon yoan yoda yodo yods yoma yomi yomo yona yond yoni yono yons yood yoon yosi yoso yoyn yoyo ysay ysco ysii yson yyyy