An erection may stand.Logical formLearned from11 sentences. An erection may be gone.Logical formLearned from11 sentences. An erection can be slick.Logical formLearned from11 sentences. Penis may undergo an erection.Logical formLearned from11 sentences. Skin may pertain-to an erection.Logical formLearned from11 sentences. Erections can be durable.Logical formLearned from11 sentences. A station may undergo an erection.Logical formLearned from11 sentences. A male may grind an erection.Logical formLearned from11 sentences. An erection may pertain-to a brother.Logical formLearned from11 sentences. An erection may be freed.Logical formLearned from11 sentences. Erections can be soft.Logical formLearned from11 sentences. A hand can be on an erection.Logical formLearned from11 sentences. An erection can be engorged.Logical formLearned from11 sentences. An erection can be free.Logical formLearned from11 sentences. Erections may be enhanced to levels.Logical formLearned from11 sentences.