(Eye tests) can be compulsory.Logical formLearned from2 sentences. Men may undergo some years of compulsory national service.Logical formLearned from2 sentences. Guidelines can be compulsory.Logical formLearned from2 sentences. A male may undertake compulsory military service.Logical formLearned from2 sentences. A hospitality can be compulsory.Logical formLearned from2 sentences. (Birth registration) can be compulsory.Logical formLearned from2 sentences. A career can be compulsory.Logical formLearned from2 sentences. Payments can be compulsory.Logical formLearned from2 sentences. Compulsory retirement can be for age.Logical formLearned from2 sentences. Sterilization can be compulsory.Logical formLearned from2 sentences. A minimum age can be for completion of compulsory education.Logical formLearned from2 sentences. A third party can be compulsory.Logical formLearned from2 sentences. A (schooling period) can be compulsory.Logical formLearned from2 sentences. A compulsory dance can be part of an (ice dance competition).Logical formLearned from2 sentences. Groups can be compulsory.Logical formLearned from2 sentences.