(Blood flow) may allow an erection.Logical formLearned from4 sentences. Erections may pertain-to men.Logical formLearned from4 sentences. System can be for erection.Logical formLearned from4 sentences. A platform may undergo an erection.Logical formLearned from4 sentences. Rigidity may undergo an erection.Logical formLearned from4 sentences. Barricades may undergo an erection.Logical formLearned from4 sentences. A hall may undergo an erection.Logical formLearned from4 sentences. Huts may undergo an erection.Logical formLearned from4 sentences. A protectorate may undergo an erection.Logical formLearned from4 sentences. Engines may undergo an erection.Logical formLearned from4 sentences. Erections can be sufficient for intercourse.Logical formLearned from4 sentences. An erection can be sufficient for performance.Logical formLearned from4 sentences. Erections may return.Logical formLearned from4 sentences. An erection can be urgent.Logical formLearned from4 sentences. Erections can be painful.Logical formLearned from4 sentences.