查找匹配组比使用正则表达式更多/更少的项目

Given the following text:

鉴于以下文字:

<p style="color: blue">Some text</p>
<p style="color:blue; margin-left: 10px">* Item 1</p> // Should match
<p style="margin-left: 10px">* Item 2</p>
<p style="margin-left: 20px">* Sub Item 1a</p> // Should match
<p style="margin-left: 20px">* Sub Item 2a</p>
<p style="margin-left: 10px">* Item 3</p>
<p style="margin-left: 20px">* Sub Item 1b</p> // Should match
<p style="margin-left: 20px">* Sub Item 2b</p>
<p style="margin-left: 30px">* Sub Item 1c</p> // Should match
<p>Some text</p>
<p style="color:blue; margin-left: 10px">* Item 1</p> // Should match
<p style=