A wait can be arduous.Logical formLearned from11 sentences. A road to humanity can be arduous.Logical formLearned from11 sentences. Paths can be arduous.Logical formLearned from11 sentences. A contest can be arduous.Logical formLearned from11 sentences. Expeditions can be arduous.Logical formLearned from11 sentences. An (approval process) can be arduous.Logical formLearned from11 sentences. An activity can be arduous.Logical formLearned from11 sentences. A duel can be arduous.Logical formLearned from11 sentences. A physical therapy can be arduous.Logical formLearned from11 sentences. A run can be arduous.Logical formLearned from11 sentences. Tests can be arduous.Logical formLearned from11 sentences. A bargaining can be arduous.Logical formLearned from10 sentences. (Working conditions) can be arduous.Logical formLearned from10 sentences. Negotiations can be arduous.Logical formLearned from10 sentences. Trust can be arduous.Logical formLearned from10 sentences.