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hey i'm feeling lazy so can't do teh check itself but i saw your megarupt check and a few things came to mind
-it's means it is, its is possessive
-don't restructure sentences unless necessary (gato will probs tell you this), subjective changes don't have rules but as you keep checking you'll understand
- http://www.smogon.com/forums/threads/spelling-and-grammar-standards.3490681/ check this link and p much learn/memorize it because it contains basic rules