tru try tta ttb ttc tte ttk ttn ttp ttr ttt ttu tty tua tub tuc tue tuk tun tup tur tut tuu tuy tya tyc tye tyn typ tyr tyt ua- uaa uab uac uae uak uan uap uar uat uau uay uba ubb ubc ube ubk ubn ubp ubr ubt ubu uby uca ucb ucc uce uck ucn ucp ucr uct ucu uea ueb uec uee uen uep uer uet uey uka ukb ukc uke ukk ukn ukp ukr uku un- una unb unc une unk unn unp unr unt unu uny up- upa upb upc upe upk upn upp upr upt upu ur- ura urb urc ure urk urn urp urr urt uru ury uta utb utc ute utk utn utp utr utt utu uty uua uuc uue uun uur uut uuu uyc uyu yaa yab yac yae yak yan yap yar yat yau yay ybc ybe ybp ybr yby yca ycc yce ycp ycu ycy yea yeb yec yee yek yen yep yer yet yey yka ykk ykn yna yne ynk ynn ynp ynu yny ypa ypu yra yrc yre yrn yrp yrt yru yta ytc yte ytk ytn ytp ytr ytt ytu yua yue yuk yun yup yur yut yuu yuy yyb yyc yye yyt yyu yyy