A letter may pertain-to a civic-holiday.Logical formLearned from25 sentences. Letters may survive.Logical formLearned from25 sentences. A letter can be from a mother.Logical formLearned from25 sentences. A group can be constituted-of-or-filled-with some letters.Logical formLearned from25 sentences. A paper may publish a letter.Logical formLearned from25 sentences. A (varsity letter) may pertain-to a male.Logical formLearned from25 sentences. A torrent can be constituted-of-or-filled-with letters.Logical formLearned from25 sentences. A letter can be from a month.Logical formLearned from25 sentences. An alphabet may consist of some letters.Logical formLearned from25 sentences. A quality may pertain-to letters.Logical formLearned from25 sentences. Letters may be written/wrote in a language.Logical formLearned from25 sentences. A maximum can be constituted-of-or-filled-with some letters.Logical formLearned from25 sentences. Letters can be rounded.Logical formLearned from25 sentences. A person may lose a letter.Logical formLearned from25 sentences. A letter can be to a scientist.Logical formLearned from25 sentences.