trm tro trp trr trt tru try ttb ttc tte tti ttm tto ttp ttr ttt ttu tty tub tuc tue tui tum tuo tup tur tut tuu tuy tyc tye tym tyo typ tyr tyt ubb ubc ube ubi ubo ubp ubr ubt ubu uby ucb ucc uce uci ucm uco ucp ucr uct ucu ueb uec uee uei uem uep uer uet uey uib uic uie uii uim uio uip uir uit uiu um- umb umc ume umi umm umo ump umr umt umu uob uoc uoe uom uoo uop uor uot up- upb upc upe upi upm upo upp upr upt upu ur- urb urc ure uri urm uro urp urr urt uru ury utb utc ute uti utm uto utp utr utt utu uty uuc uue uum uur uut uuu uyc uyi uyo uyu ybc ybe ybi ybm ybp ybr yby ycc yce yci yco ycp ycu ycy yeb yec yee yei yem yeo yep yer yet yey yie yii yim yio yip yir yit ymc yme ymi ymm ymo ymt yob yoc yoe yoi yom yoo yop yor yot you yoy ypo ypu yrc yre yro yrp yrt yru ytc yte ytm yto ytp ytr ytt ytu yue yui yum yuo yup yur yut yuu yuy yyb yyc yye yyt yyu yyy