</span>,<span class='fl'>2</span>,<span class='fl'>3</span>,<span class='fl'>4</span>,<span class='fl'>5</span>,<span class='fl'>6</span>),
    <span class='kw'>v1</span> <span class='kw'>=</span> <span class='no'>letters</span>[<span class='fl'>1</span>:<span class='fl'>6</span>],
    <span class='kw'>v2</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='fl'>1.1</span>,<span class='fl'>2</span>,<span class='fl'>3</span