A trip can be difficult.Logical formLearned from369 sentences. A team can be difficult.Logical formLearned from369 sentences. A year can be difficult.Logical formLearned from368 sentences. Conversations can be difficult.Logical formLearned from365 sentences. A sell can be difficult.Logical formLearned from355 sentences. A passage can be difficult.Logical formLearned from350 sentences. A perspective can be difficult.Logical formLearned from350 sentences. Experiences can be difficult.Logical formLearned from348 sentences. A dilemma can be difficult.Logical formLearned from348 sentences. A goal can be difficult.Logical formLearned from346 sentences. Discussions can be difficult.Logical formLearned from345 sentences. Lives can be difficult.Logical formLearned from344 sentences. A chance can be difficult.Logical formLearned from344 sentences. Courses can be difficult.Logical formLearned from343 sentences. A target can be difficult.Logical formLearned from341 sentences.