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| || | || | || | ||   ____     /_   _//  /_   _// 
| '--' || | || | ||  |    \\    -| ||-   `-| |,-  
| .--. || | \\_/ ||  | [] ||    _| ||_     | ||   
|_|| |_||  \____//   |  __//   /_____//    |_||   
`-`  `-`    `---`    |_|`-`    `-----`     `-`'   
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Text this: A note on the law of large numbers for directed random walks in random environments