5 
This is the latest Wei Hwa puzzle that can be seen on google personalised homepages.
Drag the letters into the rectangle so that words read both across and down. Purple letters only move up-and-down, while green letters only move left and right. Click and drag a colored letter to move it. You win if four five-letter English words read left-to-right along the rows and five four-letter words read down along the columns.
For answers see comments.
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