Some attempts may prove vain.Logical formLearned from2 sentences. Helpers can be vain.Logical formLearned from2 sentences. An oath can be vain.Logical formLearned from2 sentences. A tale can be vain.Logical formLearned from2 sentences. Pleadings can be vain.Logical formLearned from2 sentences. Money can be vain.Logical formLearned from2 sentences. Remonstrance can be vain.Logical formLearned from2 sentences. Persons may feel vain.Logical formLearned from2 sentences. A wouldest can be vain.Logical formLearned from2 sentences. A calling can be vain.Logical formLearned from2 sentences. Determination can be vain.Logical formLearned from2 sentences. A look can be vain.Logical formLearned from2 sentences. Regrets can be vain.Logical formLearned from2 sentences. Protection can be vain.Logical formLearned from2 sentences. A person can be vain for him-or-herself.Logical formLearned from2 sentences.