-ey b-u bbb bbc bbe bbo bbu bby bcb bcc bce bco bcu bcy be- beb bec bee beo beu bey bob boc boe boo bou boy bub buc bue buo buu buy by- byc bye byo byu c-- cbb cbc cbe cbo cbu cby ccb ccc cce cco ccu ce- ceb cec cee ceo ceu cey co- cob coc coe coo cou coy cub cuc cue cuo cuu cuy cyb cyc cye cyo ebb ebc ebe ebo ebu eby ec- ecb ecc ece eco ecu eeb eec eee eeo eey eo- eob eoc eoe eoo eou eu- eub euc eue eyc eye eyo ob- obb obc obe obo obu oby oc- ocb occ oco ocu oeb oec oee oeo oey oo- oob ooc ooo ou- ouc oue ouo oye oyo ubb ubc ube ubo ubu uby ucb ucc uce uco ucu ueb uec uee uey uob uoc uoe uoo uuc uue uuu uyc uyo uyu ybc ybe yby ycc yce yco ycu ycy yeb yec yee yeo yey yob yoc yoe yoo you yoy yue yuo yuu yuy yyb yyc yye yyu yyy