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Noun: dog, Ralph, mistletoe, Oreo, education, taco, Mississippi, peace, music, pizza Pronoun: I, we, he, she, it, they, them, him, her, who, whom, whomever, that, which Verb: tumble, dictate, zigzag, is, are, was, were, enlist, inoculate, stab Adverb: speedily, tumultuously, harshly, dumbly, voraciously, democratically, tremulously, wherever, well, too Adjective: skinny, enthusiastic, dire, rueful, industrious, yellow, distasteful, Cuban, conservative, phat Preposition: off, on, in, out, over, through, to, under, above, about, throughout, with Conjunction: and, but, yet, so, however, neither, nor, either, or Interjection: Yikes! Whatever! Sheesh! Heck! Omigod! Awesome!
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Roy Peter Clark (The Glamour of Grammar: A Guide to the Magic and Mystery of Practical English)