ttc tte ttg tth tto ttp ttr ttt ttu tty tub tuc tue tug tuh tuo tup tur tut tuu tuy tyc tye tyg tyo typ tyr tyt ubb ubc ube ubg ubh ubo ubp ubr ubt ubu uby ucb ucc uce ucg uch uco ucp ucr uct ucu ueb uec uee ueg ueh uep uer uet uey ugb ugc uge ugg ugh ugo ugp ugr ugt ugu uhb uhc uhe uhh uho uhp uhr uht uhu uhy uob uoc uoe uog uoo uop uor uot up- upb upc upe upg uph upo upp upr upt upu ur- urb urc ure urg uro urp urr urt uru ury utb utc ute uth uto utp utr utt utu uty uuc uue uug uur uut uuu uyc uyo uyu ybc ybe ybg ybp ybr yby ycc yce ych yco ycp ycu ycy yeb yec yee yeg yeh yeo yep yer yet yey ygc ygo yhc yhe yht yhu yob yoc yoe yog yoo yop yor yot you yoy ypg ypo ypu yrc yre yrg yro yrp yrt yru ytc yte yth yto ytp ytr ytt ytu yue yug yuh yuo yup yur yut yuu yuy yyb yyc yye yyg yyt yyu yyy