A std can be known.Logical formLearned from11 sentences. A std can be nasty.Logical formLearned from11 sentences. Variety can be constituted-of-or-filled-with stds.Logical formLearned from11 sentences. Stds may be treated.Logical formLearned from11 sentences. Stds may undergo a transmission.Logical formLearned from10 sentences. Stds may undergo an assortment.Logical formLearned from10 sentences. Stds can be on a rise.Logical formLearned from10 sentences. (Animal charge) may try stds.Logical formLearned from10 sentences. A std may institute a pyogenic infection.Logical formLearned from10 sentences. Stds may pertain-to a male.Logical formLearned from10 sentences. Levels can be constituted-of-or-filled-with stds.Logical formLearned from10 sentences. Protection can be against some stds.Logical formLearned from10 sentences. Tests can be for stds.Logical formLearned from10 sentences. A member may pertain-to stds.Logical formLearned from9 sentences. Stds can be prevalent.Logical formLearned from9 sentences.