Suppose that you have a shirt that have pattern with different colors (red and blue).
However, you can't call it len loje laso, because that means "purple shirt".
So, we have to use en to separate the two colors, and then we have to use pi to show that the even though there are two different colors, they both modify the word "shirt":
| len pi loje en laso |
|
shirt of red and blue |
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