An erection can be gradual.Logical formLearned from5 sentences. A genus may undergo an erection.Logical formLearned from5 sentences. A dwelling may undergo an erection.Logical formLearned from5 sentences. A synagogue may undergo an erection.Logical formLearned from5 sentences. Forts may undergo an erection.Logical formLearned from5 sentences. Dwellings may undergo an erection.Logical formLearned from5 sentences. Erection can be in males.Logical formLearned from5 sentences. Settlements may undergo an erection.Logical formLearned from5 sentences. A pillar may undergo an erection.Logical formLearned from5 sentences. An institution may undergo an erection.Logical formLearned from5 sentences. An erection can be safe.Logical formLearned from5 sentences. An university may undergo an erection.Logical formLearned from5 sentences. A church-building may undergo an erection.Logical formLearned from5 sentences. Barriers to a spread of knowledge may undergo an erection.Logical formLearned from5 sentences. An erection can be uncontrollable.Logical formLearned from5 sentences.