> stem(x, par1, par2, par3)
  The decimal point is 3 digit(s) to the right of the |
   6 | 288801346788899
   8 | 12223445567889911334566699
  10 | 0012334455666778889999023446666
  12 | 222234458801346778
  14 | 11891
  16 | 2