Cesars can be formidable to princes.Logical formLearned from1 sentences. A country can be formidable to a byzantine empire.Logical formLearned from1 sentences. Relics can be formidable.Logical formLearned from1 sentences. A claim of lineal succession can be formidable to a usurper.Logical formLearned from1 sentences. A scar can be formidable.Logical formLearned from1 sentences. Chiefs can be formidable.Logical formLearned from1 sentences. An aegis can be formidable.Logical formLearned from1 sentences. An invader can be formidable.Logical formLearned from1 sentences. Pirates can be formidable.Logical formLearned from1 sentences. A stranger can be formidable.Logical formLearned from1 sentences. Swarms can be formidable.Logical formLearned from1 sentences. A confederate can be formidable.Logical formLearned from1 sentences. A barbarian can be formidable.Logical formLearned from1 sentences. Allies can be formidable to subjects.Logical formLearned from1 sentences. Myriads can be formidable.Logical formLearned from1 sentences.