A trade can be difficult.Logical formLearned from19 sentences. Dealings can be difficult.Logical formLearned from19 sentences. Hostile takeovers can be difficult.Logical formLearned from19 sentences. A (re-election bid) can be difficult.Logical formLearned from19 sentences. A computer can be difficult.Logical formLearned from19 sentences. Matchups can be difficult.Logical formLearned from19 sentences. Interviews can be difficult.Logical formLearned from19 sentences. Predicaments can be difficult.Logical formLearned from19 sentences. Insurance can be difficult.Logical formLearned from19 sentences. A secret can be difficult.Logical formLearned from19 sentences. A husband can be difficult.Logical formLearned from19 sentences. Screening can be difficult.Logical formLearned from19 sentences. Diseases can be difficult.Logical formLearned from19 sentences. Controls can be difficult.Logical formLearned from19 sentences. A market can be difficult.Logical formLearned from19 sentences.