Challenges can be painful.Logical formLearned from25 sentences. A self-examination can be painful.Logical formLearned from25 sentences. A call can be painful.Logical formLearned from25 sentences. A thorn can be painful.Logical formLearned from25 sentences. Options can be painful.Logical formLearned from25 sentences. A discussion can be painful.Logical formLearned from25 sentences. An evolution can be painful.Logical formLearned from25 sentences. A consequence can be painful.Logical formLearned from25 sentences. An irritation can be painful.Logical formLearned from25 sentences. An ear can be painful.Logical formLearned from25 sentences. A demise can be painful.Logical formLearned from25 sentences. A (right knee) can be painful.Logical formLearned from25 sentences. A game can be painful.Logical formLearned from25 sentences. Histories can be painful.Logical formLearned from25 sentences. A (restructuring drive) can be painful.Logical formLearned from25 sentences.