tro trp trr trs trt tru try tsc tse tsl tsm tso tsp tsr tss tst tsu tsy ttc tte ttl ttm tto ttp ttr tts ttt ttu tty tuc tue tul tum tuo tup tur tus tut tuu tuy tyc tye tyl tym tyo typ tyr tys tyt ucc uce ucl ucm uco ucp ucr ucs uct ucu uec uee uel uem uep uer ues uet uey ulc ule ull ulm ulo ulp ulr uls ult ulu uly um- umc ume uml umm umo ump umr ums umt umu uoc uoe uol uom uoo uop uor uos uot up- upc upe upm upo upp upr ups upt upu ur- urc ure url urm uro urp urr urs urt uru ury usc use usl usm uso usp usr uss ust usu utc ute utl utm uto utp utr uts utt utu uty uuc uue uum uur uus uut uuu uyc uyo uys uyu ycc yce ycl yco ycp ycs ycu ycy yec yee yel yem yeo yep yer yes yet yey ylc yle yll ylm ylr yls ylt yly ymc yme yml ymm ymo yms ymt yoc yoe yol yom yoo yop yor yos yot you yoy ypl ypo yps ypu yrc yre yro yrp yrs yrt yru ysc yse ysl ysm yso ysp ysr yss yst ysu ysy ytc yte ytl ytm yto ytp ytr yts ytt ytu yue yul yum yuo yup yur yus yut yuu yuy yyc yye yys yyt yyu yyy