An agency can be formidable.Logical formLearned from3 sentences. An interlocutor can be formidable.Logical formLearned from3 sentences. (Authority figures) can be formidable.Logical formLearned from3 sentences. An argument can be formidable.Logical formLearned from3 sentences. A honor can be formidable.Logical formLearned from3 sentences. A river can be formidable.Logical formLearned from3 sentences. Obstacles to an agreement can be formidable.Logical formLearned from3 sentences. A vocabulary can be formidable.Logical formLearned from3 sentences. A preacher can be formidable.Logical formLearned from3 sentences. A connection can be formidable.Logical formLearned from3 sentences. (Crime syndicates) can be formidable.Logical formLearned from3 sentences. A revolutionary can be formidable.Logical formLearned from3 sentences. A maze can be formidable.Logical formLearned from3 sentences. An assumption can be formidable.Logical formLearned from3 sentences. A prosecutor can be formidable.Logical formLearned from3 sentences.