ttf tti ttl ttm tto ttr ttt ttu tty tuc tue tuf tui tul tum tuo tur tut tuu tuy tyc tye tyf tyl tym tyo tyr tyt ucc uce ucf uci ucl ucm uco ucr uct ucu uec uee uef uei uel uem uer uet uey ufc ufe uff ufi ufl ufm ufo ufr uft ufu uic uie uif uii uil uim uio uir uit uiu ulc ule ulf uli ull ulm ulo ulr ult ulu uly um- umc ume umf umi uml umm umo umr umt umu uoc uoe uol uom uoo uor uot ur- urc ure urf uri url urm uro urr urt uru ury utc ute utf uti utl utm uto utr utt utu uty uuc uue uum uur uut uuu uyc uyi uyo uyu ycc yce ycf yci ycl yco ycu ycy yec yee yef yei yel yem yeo yer yet yey yfc yfe yff yfm yfr yft yfu yie yif yii yim yio yir yit ylc yle yli yll ylm ylr ylt yly ymc yme ymi yml ymm ymo ymt yoc yoe yof yoi yol yom yoo yor yot you yoy yrc yre yrf yro yrt yru ytc yte ytf ytl ytm yto ytr ytt ytu yue yui yul yum yuo yur yut yuu yuy yyc yye yyf yyt yyu yyy