To be clear, you only need 7 wooden slabs in total, no matter what wood type of the slabs is. For example, you can use 2 oak slabs, 2 spruce slabs, and 3 birch slabs and it still works for this recipe ...

Why Elon Musk says saving for retirement will be 'irrelevant' in the next 20 years Dozens of NCAA basketball players charged ...