Letters may pertain-to a station.Logical formLearned from129 sentences. A letter may be posted.Logical formLearned from129 sentences. A company may sign a letter of intent.Logical formLearned from129 sentences. Letters may pertain-to a language.Logical formLearned from129 sentences. A letter may undergo a discovery.Logical formLearned from129 sentences. Letters can be friendly.Logical formLearned from128 sentences. A female may write in a letter.Logical formLearned from128 sentences. A letter may pertain-to a president.Logical formLearned from128 sentences. Letter can be from a country.Logical formLearned from128 sentences. Letters may pertain-to a scientist.Logical formLearned from127 sentences. A person may see letters.Logical formLearned from126 sentences. A letter may be written/wrote by a female.Logical formLearned from126 sentences. Letters may be dated.Logical formLearned from126 sentences. A person may sign a letter.Logical formLearned from126 sentences. A letter can be to a paper.Logical formLearned from125 sentences.