-ey b-u bbb bbc bbe bbk bbu bby bcb bcc bce bck bcu bcy bcz be- beb bec bee bek beu bey bez bkb bkc bke bkk bub buc bue buk buu buy buz by- byc bye byk byu byz bze bzu bzz c-- cbb cbc cbe cbk cbu cby cbz ccb ccc cce cck ccu ccz ce- ceb cec cee cek ceu cey cez ckb ckc cky cub cuc cue cuk cuu cuy cuz cyb cyc cye cyk cz- czc cze czk ebb ebc ebe ebk ebu eby ec- ecb ecc ece eck ecu eeb eec eee eek eey ekb ekc eke eku eky eu- eub euc eue eyc eye eze ezz k-z kbb kbc kbe kbk kbu kbz kcb kcc kce kck kcu ke- keb kec kee kek key kez kkb kkc kke kkk kku kky kub kuc kue kuk kuu kuy kyc kye kyu kyz kzy ubb ubc ube ubk ubu uby ucb ucc uce uck ucu ueb uec uee uey ukb ukc uke ukk uku ukz uuc uue uuu uyc uyu uzb uzu ybc ybe yby ybz ycc yce ycu ycy yeb yec yee yek yey yez ykk yue yuk yuu yuy yyb yyc yye yyu yyy yyz yzb yzu yzy zbb zbc zby zce zeb zec zee zek zez zub zuc zuk zuz zzy zzz