Stds can be in the western world.Logical formLearned from1 sentences. Treatment of stds may have an impact.Logical formLearned from1 sentences. A std may cause an ulcer.Logical formLearned from1 sentences. Stds may account for some percent of cases.Logical formLearned from1 sentences. A (laundry list) can be constituted-of-or-filled-with stds.Logical formLearned from1 sentences. (District coordinator) may imagine stds.Logical formLearned from1 sentences. Stds may be included.Logical formLearned from1 sentences. Stds may emerge during some years.Logical formLearned from1 sentences. Findings may list stds.Logical formLearned from1 sentences. Stds can be from (health-care providers).Logical formLearned from1 sentences. A std can be difficult.Logical formLearned from1 sentences. Stds may face teens.Logical formLearned from1 sentences. A run-down may pertain-to stds.Logical formLearned from1 sentences. Students may take stds.Logical formLearned from1 sentences. Bad kids may get stds.Logical formLearned from1 sentences.