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Colours Of Pens And Caps

A computer nerd likes to keep five pens in his shirt pocket. The pens are of five different colors and their caps, seen below, are of the same five colors, but not a single cap is correctly situated on its colored pen! Given the visible arrangement below and the following clues, can you determine the order of each colored pen?

The black pen is next to the pen with the blue cap
The green pen is two pens away from the black pen.
The red and blue pens are not adjacent.
The yellow pen is second from the left

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