Stds may cause symptoms.Logical formLearned from2 sentences. Stds may be spreaded by relations.Logical formLearned from2 sentences. A std may be transmitted by bacteria.Logical formLearned from2 sentences. A person can be on stds.Logical formLearned from2 sentences. A patient may have a std.Logical formLearned from2 sentences. Pregnant women can be with stds.Logical formLearned from2 sentences. Stds may be transmitted through oral sex.Logical formLearned from2 sentences. A person may want a std.Logical formLearned from2 sentences. Some percent of (virginity pledgers) may have stds.Logical formLearned from2 sentences. A fear can be constituted-of-or-filled-with stds.Logical formLearned from2 sentences. (Health consequences) can be from a std.Logical formLearned from2 sentences. Folks may be tested for stds.Logical formLearned from2 sentences. A std can be among young persons.Logical formLearned from2 sentences. Teens may have a std.Logical formLearned from2 sentences. A std can be a papillomavirus.Logical formLearned from2 sentences.