tsx tsy tta ttc tte tti ttl tto ttp tts ttt ttx tty txe txi txl txs txt tya tyc tye tyl tyo typ tys tyt xaa xac xal xap xas xat xci xcl xcp xcx xee xel xep xes xet xex xia xic xie xii xio xis xit xix xla xli xls xlt xoa xoc xoi xoo xop xos xot xox xpa xpc xpe xpl xpo xpp xps xpt xsa xsc xsi xsl xsp xss xst xtc xti xtp xts xtx xty xxi xxl xxo xxp xxx xxy xyl xyp xyy yaa yac yae yai yal yao yap yas yat yax yay yca ycc yce yci ycl yco ycp ycs ycy yea yec yee yei yel yeo yep yes yet yex yey yie yii yio yip yis yit ylc yle yli yll yls ylt yly yoc yoe yoi yol yoo yop yos yot yox yoy ypa ypl ypo yps ysa ysc yse ysi ysl yso ysp yss yst ysy yta ytc yte ytl yto ytp yts ytt yxa yxe yxy yyc yye yys yyt yyy