-ic b-u bbb bbc bbi bbk bbt bbu bby bcb bcc bci bck bct bcu bcy bi- bib bic bii bik bit biu biy bkb bkc bkk bkt btb btc bti btk btt btu bty bub buc bui buk but buu buy by- byc byi byk byt byu c-- cbb cbc cbi cbk cbt cbu cby ccb ccc cci cck cct ccu ci- cib cic cii cik cit ciu ckb ckc cki ckt cky ctb ctc cti ctk ctt ctu cty cub cuc cui cuk cut cuu cuy cyb cyc cyk cyt ibb ibc ibi ibk ibt ibu iby icb icc ici ick ict icu icy iib iic iii iit iiu ikb ikc iki ikk ikt iku itb itc iti itk itt itu ity iu- iub iuc iui iut iyc iyt iyy k-t kbb kbc kbi kbk kbu kcb kcc kci kck kct kcu kib kic kii kik kit kiu kkb kkc kki kkk kkt kku kky ktb ktc ktk ktt ktu kub kuc kui kuk kut kuu kuy kyc kyt kyu tbb tbc tbi tbk tbt tbu tcb tcc tci tck tct tcu tib tic tii tik tit tiu tiy tkb tkc tkk tkt tky ttb ttc tti ttk ttt ttu tty tub tuc tui tuk tut tuu tuy tyc tyt ubb ubc ubi ubk ubt ubu uby ucb ucc uci uck uct ucu uib uic uii uit uiu ukb ukc uki ukk uku utb utc uti utk utt utu uty uuc uut uuu uyc uyi uyu ybc ybi yby ycc yci ycu ycy yii yit yki ykk ytc ytk ytt ytu yui yuk yut yuu yuy yyb yyc yyt yyu yyy