Hopes can be fruitless.Logical formLearned from13 sentences. Efforts may proven fruitless.Logical formLearned from13 sentences. A half can be fruitless.Logical formLearned from12 sentences. Wanderings can be fruitless.Logical formLearned from12 sentences. Pursuits can be fruitless.Logical formLearned from12 sentences. A season can be fruitless.Logical formLearned from12 sentences. A hunting can be fruitless.Logical formLearned from12 sentences. A mission can be fruitless.Logical formLearned from12 sentences. An attempt may prove fruitless.Logical formLearned from12 sentences. An activity can be fruitless.Logical formLearned from12 sentences. The rights of animals can be fruitless.Logical formLearned from12 sentences. A waiting can be fruitless.Logical formLearned from12 sentences. An exchange can be fruitless.Logical formLearned from12 sentences. Appeals can be fruitless.Logical formLearned from12 sentences. A confrontation can be fruitless.Logical formLearned from12 sentences.