After being sawn from the log, boards are “graded”, based on various criteria. These criteria are different for hardwoods and softwoods, which can be very confusing!
To simplify, list only the top two grades each for softwoods and for hardwoods, and explain how boards can meet criteria for those two grades.

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sorry but I don't know this question is too hard for me :(

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Answer: sorry its so hard

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