-ey b-u bbb bbc bbe bbn bbu bby bcb bcc bce bcn bcu bcy be- beb bec bee ben beu bey bnb bnc bne bnn bnu bub buc bue bun buu buy by- byc bye byn byu c-- cbb cbc cbe cbn cbu cby ccb ccc cce ccn ccu ce- ceb cec cee cen ceu cey cn- cnb cnc cne cnn cnu cny cub cuc cue cun cuu cuy cyb cyc cye cyn ebb ebc ebe ebn ebu eby ec- ecb ecc ece ecn ecu eeb eec eee een eey en- enb enc ene enn enu eny eu- eub euc eue eun eyc eye eyn nbb nbc nbe nbn nbu ncb ncc nce ncn ncu ne- neb nec nee nen neu ney nnb nnc nne nnn nnu nub nuc nue nun nuu nuy nyc nye nyn nyu nyy ubb ubc ube ubn ubu uby ucb ucc uce ucn ucu ueb uec uee uen uey un- unb unc une unn unu uny uuc uue uun uuu uyc uyu ybc ybe yby ycc yce ycu ycy yeb yec yee yen yey yne ynn ynu yny yue yun yuu yuy yyb yyc yye yyu yyy