Difficulties may occur.Logical formLearned from111 sentences. A person may see a difficulty.Logical formLearned from110 sentences. A nature may pertain-to difficulties.Logical formLearned from110 sentences. Persons may have difficulties.Logical formLearned from109 sentences. A difficulty may pertain-to a job.Logical formLearned from109 sentences. Difficulties can be diplomatic.Logical formLearned from108 sentences. Difficulties of conducting a survey of public opinion may introduce sources of error.Logical formLearned from108 sentences. Persons can be aware of difficulties.Logical formLearned from107 sentences. Difficulties may pertain-to life.Logical formLearned from107 sentences. A solution can be to difficulties.Logical formLearned from106 sentences. A person may run into difficulties.Logical formLearned from105 sentences. A difficulty can be emotional.Logical formLearned from105 sentences. A person can be in difficulty.Logical formLearned from104 sentences. Officials may have difficulty.Logical formLearned from104 sentences. Difficulties can be persistent.Logical formLearned from104 sentences.