The 35553 layout means a FIVE-paragraph essay with three sentences in the introduction, five sentences in the second, third and fourth paragraphs, and three in the conclusion.
There are three paragraphs in the body because you should have THREE ideas (three is a magic number.) In each of the three body paragraphs you need about two or three examples and supporting information to back those ideas up.
The example below could be for or against. Basically, you need THREE very good ideas and lots of examples to back them up.
|Introduction: Three sentences
|Paragraph 2: Five Sentences
|Paragraph 3: Five Sentences
|Paragraph 4: Five Sentences
|Conclusion: Three Sentences
What do you want to do now?