title: Add element to end of tuple list in Haskell
body: <p>Im a new in haskell and i try to add element to end of tuple list</p>
  
  <p>For example:</p>
  
  <p>[(1,2,3),(2,3,4)]  i want to add (3,4,5)  . [(1,2,3),(2,3,4),(3,4,5)]</p>