{{#extend "deep-a"}}
	{{#content "top" mode="prepend"}}
		<p>b1</p>
	{{/content}}

	{{#content "top" mode="prepend"}}
		<p>b1.1</p>
	{{/content}}

	{{#content "middle"}}
		<p>b2</p>
	{{/content}}

	{{#content "bottom" mode="append"}}
		<p>b3</p>

		{{{block "b"}}}
	{{/content}}
{{/extend}}