A person may look at a letter.Logical formLearned from64 sentences. Letters can be to a newspaper.Logical formLearned from64 sentences. A male may write letter.Logical formLearned from64 sentences. A female may sign a letter.Logical formLearned from64 sentences. A letter may be addrest to a president.Logical formLearned from64 sentences. Recipients may pertain-to a letter.Logical formLearned from64 sentences. A female may compose a letter of apology to a son.Logical formLearned from64 sentences. Letters may be written/wrote by a female.Logical formLearned from64 sentences. Sequences can be constituted-of-or-filled-with letters.Logical formLearned from64 sentences. A letter can be to fans.Logical formLearned from64 sentences. An open letter can be to persons.Logical formLearned from63 sentences. Letters can be known.Logical formLearned from63 sentences. Letters can be in an alphabet.Logical formLearned from63 sentences. A volume may pertain-to letters.Logical formLearned from63 sentences. Letters can be constituted-of-or-filled-with warning.Logical formLearned from63 sentences.