A walk can be arduous.Logical formLearned from24 sentences. A trip can be arduous.Logical formLearned from24 sentences. Jobs can be arduous.Logical formLearned from23 sentences. A way can be arduous.Logical formLearned from23 sentences. Duties can be arduous.Logical formLearned from23 sentences. A race can be arduous.Logical formLearned from23 sentences. A week can be arduous.Logical formLearned from23 sentences. A road can be arduous.Logical formLearned from23 sentences. Challenges can be arduous.Logical formLearned from22 sentences. A feat can be arduous.Logical formLearned from22 sentences. Weeks can be arduous.Logical formLearned from22 sentences. An endeavor can be arduous.Logical formLearned from21 sentences. An ordeal can be arduous.Logical formLearned from21 sentences. A terrain can be arduous.Logical formLearned from21 sentences. A study can be arduous.Logical formLearned from21 sentences.