Grouping list item using with jquery

[frak36]

I have following simple list item code in my html file\[code\]<ul> <li>item one</li> <li>item two</li> <li>item three</li> <li>item four</li> <li>item five</li> <li>item six</li> <li>item seven</li> <li>item eight</li> <li>item nine</li> <li>item ten</li> <li>item eleven</li> <li>item twelve</li> </ul>\[/code\]and i want to output like this way using with jQuery.\[code\]item one item four item seven item tenitem two item five item eight item elevenitem three item six item nine item twelve\[/code\]