A difficulty can be that something-is-the-case.Logical formLearned from584 sentences. A male may have difficulties.Logical formLearned from553 sentences. Times can be constituted-of-or-filled-with difficulty.Logical formLearned from548 sentences. Levels can be constituted-of-or-filled-with difficulty.Logical formLearned from512 sentences. A country may have difficulty.Logical formLearned from506 sentences. A difficulty can be increased.Logical formLearned from495 sentences. Financial difficulties can be serious.Logical formLearned from483 sentences. A difficulty may pertain-to a female.Logical formLearned from475 sentences. Difficulties can be in studying.Logical formLearned from461 sentences. A male may have a difficulty.Logical formLearned from457 sentences. Difficulties can be operational.Logical formLearned from455 sentences. Difficulties can be marital.Logical formLearned from442 sentences. Difficulties may express love.Logical formLearned from433 sentences. A difficulty may pertain-to persons.Logical formLearned from432 sentences. A difficulty can be that something-is-the-case.Logical formLearned from430 sentences.