Invasions can be periodic.Logical formLearned from23 sentences. An invasion can be amphibious.Logical formLearned from23 sentences. An emperor may undergo an invasion.Logical formLearned from23 sentences. Invasions can be in a century.Logical formLearned from23 sentences. A year can be after an invasion.Logical formLearned from23 sentences. Rats may undergo invasions.Logical formLearned from23 sentences. A month may mark an anniversary of an invasion of a country.Logical formLearned from23 sentences. The world may undergo an invasion.Logical formLearned from23 sentences. An invasion can be bungled.Logical formLearned from23 sentences. An invasion may undergo approval.Logical formLearned from23 sentences. Calls can be for an invasion.Logical formLearned from23 sentences. An invasion can be unnecessary.Logical formLearned from23 sentences. A fear can be constituted-of-or-filled-with invasion.Logical formLearned from23 sentences. An invasion may undergo warnings.Logical formLearned from23 sentences. An invasion of a country may begin on a month.Logical formLearned from23 sentences.