A spate can be constituted-of-or-filled-with letters.Logical formLearned from42 sentences. A letter can be constituted-of-or-filled-with acknowledgement.Logical formLearned from42 sentences. Letters may contain (anthrax spores).Logical formLearned from41 sentences. A length may pertain-to a letter.Logical formLearned from41 sentences. A name may begin with a letter.Logical formLearned from41 sentences. A letter can be to an emperor.Logical formLearned from41 sentences. A letter can be unstressed.Logical formLearned from41 sentences. A letter may be typed.Logical formLearned from41 sentences. A letter can be clear.Logical formLearned from41 sentences. A letter can be from a jail.Logical formLearned from41 sentences. Letters may be smuggled.Logical formLearned from41 sentences. A male may know letters.Logical formLearned from41 sentences. A signature can be on a letter.Logical formLearned from41 sentences. A honorary doctorate can be in letters.Logical formLearned from41 sentences. Letters may be submitted.Logical formLearned from41 sentences.