Antigen may undergo an expression.Logical formLearned from13 sentences. An expression may be inclosed in parentheses.Logical formLearned from13 sentences. Facial expressions may play a role.Logical formLearned from13 sentences. Expression may undergo an upregulation.Logical formLearned from13 sentences. Embarrassment may undergo an expression.Logical formLearned from13 sentences. An (expression library) can be powerful.Logical formLearned from13 sentences. Expressions can be timeless.Logical formLearned from13 sentences. Vision may undergo an expression.Logical formLearned from13 sentences. Some medium can be constituted-of-or-filled-with expression.Logical formLearned from13 sentences. An expression can be malevolent.Logical formLearned from13 sentences. Expressions can be serene.Logical formLearned from13 sentences. (Compatible regular expressions) may pertain-to a female.Logical formLearned from13 sentences. A disorder can be constituted-of-or-filled-with expression.Logical formLearned from13 sentences. A place can be for expression.Logical formLearned from13 sentences. A resentment may undergo an expression.Logical formLearned from13 sentences.