A phase can be arduous.Logical formLearned from9 sentences. A (mountain stage) can be arduous.Logical formLearned from9 sentences. (Registration requirements) can be arduous.Logical formLearned from9 sentences. A passage can be arduous.Logical formLearned from9 sentences. A task of instruction can be arduous.Logical formLearned from8 sentences. An exertion can be arduous.Logical formLearned from8 sentences. Holes can be arduous.Logical formLearned from8 sentences. A workout can be arduous.Logical formLearned from8 sentences. An evacuation can be arduous.Logical formLearned from8 sentences. Routes can be arduous.Logical formLearned from8 sentences. A commute can be arduous.Logical formLearned from8 sentences. A discipline can be arduous.Logical formLearned from8 sentences. Climbs can be arduous.Logical formLearned from8 sentences. A regimen can be arduous.Logical formLearned from8 sentences. Meetings can be arduous.Logical formLearned from8 sentences.