bubal ubbal bbual bbual ubbal bubal buabl ubabl baubl abubl uabbl aubbl bbaul bbaul babul abbul babul abbul ubabl buabl uabbl aubbl baubl abubl bubla ubbla bbula bbula ubbla bubla bulba ublba bluba lbuba ulbba lubba bblua bblua blbua lbbua blbua lbbua ublba bulba ulbba lubba bluba lbuba bualb ubalb baulb abulb uablb aublb bulab ublab bluab lbuab ulbab lubab balub ablub blaub lbaub albub labub ualbb aulbb ulabb luabb alubb laubb bbalu bbalu bablu abblu bablu abblu bblau bblau blbau lbbau blbau lbbau balbu ablbu blabu lbabu albbu labbu balbu ablbu blabu lbabu albbu labbu ubalb bualb uablb aublb baulb abulb ublab bulab ulbab lubab bluab lbuab ualbb aulbb ulabb luabb alubb laubb balub ablub blaub lbaub albub labub
Note: these 'words' (valid or invalid) are all the permutations of the word bubal. These words are obtained by scrambling the letters in bubal.