Use "riffling" in a sentence

1. Shooting down, riffling across a wider shelf, then it pooled up, seventy-five or a hundred millimetres deep

2. At the end, he did as I had done, riffling the pages of the last book

3. Twenty minutes later she found Vince swearing at a computer monitor and riffling through a stack of papers on his desk in what was an otherwise meticulously organized garden center

4. Trent stood on the other side, riffling through some papers