I'd never heard of that before I saw this book I'm not sure
I never hear of that before I see this book I not sure
pro:sub adv v prep pro:dem conj pro:sub v det:dem n pro:sub neg adj
i'd never heard of that before i saw this book i'm not sure .
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i ' d WORD_BOUNDARY n e v e r WORD_BOUNDARY h e a r d WORD_BOUNDARY o f WORD_BOUNDARY t h a t WORD_BOUNDARY b e f o r e WORD_BOUNDARY i WORD_BOUNDARY s a w WORD_BOUNDARY t h i s WORD_BOUNDARY b o o k WORD_BOUNDARY i ' m WORD_BOUNDARY n o t WORD_BOUNDARY s u r e WORD_BOUNDARY