Letters can be required.Logical formLearned from59 sentences. A person may reply to a letter.Logical formLearned from59 sentences. Photocopies can be constituted-of-or-filled-with letters.Logical formLearned from59 sentences. Followings can be a letter.Logical formLearned from59 sentences. A letter can be constituted-of-or-filled-with acknowledgment.Logical formLearned from59 sentences. A letter may pertain-to a surname.Logical formLearned from59 sentences. Regard can be to a letter.Logical formLearned from59 sentences. An open letter may be released.Logical formLearned from59 sentences. Letters can be from a public.Logical formLearned from59 sentences. A letter of intent may be signed.Logical formLearned from59 sentences. Letters can be constituent.Logical formLearned from58 sentences. Letters may be found.Logical formLearned from58 sentences. Letters may reveal that something-is-the-case.Logical formLearned from58 sentences. Letters can be consonant.Logical formLearned from58 sentences. A letter can be on stationery.Logical formLearned from58 sentences.