title: How to copy data in a sequence consisting of several rows?
body: <p>I would like to achieve this result:
  - The variable v is copied in sequence every 3
  - Each subsequent sequence is in the next row
  - The variable variables var1-var4 are appended to each subsequent sequence</p>
  
  <p>Input data</p>
  
  <pre><code>name_a     var_1    var_2    var_3    v1    v2    v3    v4    v5     v6
  vw    diesel    1600    black    technican    repair_mech    30    diagnostic    repair_test    80
  audi    gasoline    1200    red    technican    repair_mech    40    expert    repair_test    120
  </code></pre>
  
  <p>I would like to receive such a result.</p>
  
  <pre><code>name_a    var_1    var_2    var3   vA    vB    Vc
  vw    diesel    1600    black    technican    repair_mech    30
  vw    diesel    1600    black    diagnostic    repair_test    80
  audi    gasoline     1200    red    technican    repair_mech    40
  audi    gasoline     1200    red    expert    repair_test    120
  </code></pre>
  
  <p>Thanks for the help in advance. With a large number of variables in Excel, this cannot be done.</p>